EXHIBIT 10 B1


                  CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER

                                 CERTIFICATIONS

I, Ronald E. Robison, certify that:

1. I have reviewed this report on Form N-CSR of Morgan Stanley Aggressive Equity
   Fund;

2. Based on my knowledge, this report does not contain any untrue statement of a
   material fact or omit to state a material fact necessary to make the
   statements made, in light of the circumstances under which such statements
   were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements and other financial
   information included in this report, fairly present in all material respects
   the financial condition, results of operations, changes in net assets, and
   cash flows (if the financial statements are required to include a statement
   of cash flows) of the registrant as of, and for, the periods presented in
   this report;

4. The registrant's other certifying officers and I are responsible for
   establishing and maintaining disclosure controls and procedures (as defined
   in Rule 30a-3(c) under the Investment Company Act of 1940) for the registrant
   and have:

a) designed such disclosure controls and procedures, or caused such disclosure
   controls and procedures to be designed under our supervision, to ensure that
   material information relating to the registrant, including its consolidated
   subsidiaries, is made known to us by others within those entities,
   particularly during the period in which this report is being prepared;

[b) Omitted.]

c) evaluated the effectiveness of the registrant's disclosure controls and
   procedures and presented in this report our conclusions about the
   effectiveness of the disclosure controls and procedures, as of a date within
   90 days prior to the filing date of this report based on such evaluation; and

d) disclosed in this report any change in the registrant's internal control over
   financial reporting that occurred during the registrant's most recent fiscal
   half-year (the registrant's second fiscal half-year in the case of an annual
   report) that has materially affected, or is reasonably likely to materially
   affect, the registrant's internal control over financial reporting; and

5. The registrant's other certifying officer(s) and I have disclosed to the
   registrant's auditors and the audit committee of the registrant's board of
   directors (or persons performing the equivalent functions):


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a) all significant deficiencies and material weaknesses in the design or
   operation of internal control over financial reporting which are reasonably
   likely to adversely affect the registrant's ability to record, process,
   summarize, and report financial information; and

b) any fraud, whether or not material, that involves management or other
   employees who have a significant role in the registrant's internal controls
   over financial reporting.

Date:  March 19, 2004


                                          /s/ Ronald E. Robison
                                          Ronald E. Robison
                                          Principal Executive Officer

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                                                                   EXHIBIT 10 B2

                  CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER

                                 CERTIFICATIONS

I, Francis Smith, certify that:

6. I have reviewed this report on Form N-CSR of Morgan Stanley Aggressive Equity
   Fund;

7. Based on my knowledge, this report does not contain any untrue statement of a
   material fact or omit to state a material fact necessary to make the
   statements made, in light of the circumstances under which such statements
   were made, not misleading with respect to the period covered by this report;

8. Based on my knowledge, the financial statements and other financial
   information included in this report, fairly present in all material respects
   the financial condition, results of operations, changes in net assets, and
   cash flows (if the financial statements are required to include a statement
   of cash flows) of the registrant as of, and for, the periods presented in
   this report;

9. The registrant's other certifying officers and I are responsible for
   establishing and maintaining disclosure controls and procedures (as defined
   in Rule 30a-3(c) under the Investment Company Act of 1940) for the registrant
   and have:

b) designed such disclosure controls and procedures, or caused such disclosure
   controls and procedures to be designed under our supervision, to ensure that
   material information relating to the registrant, including its consolidated
   subsidiaries, is made known to us by others within those entities,
   particularly during the period in which this report is being prepared;

[b) Omitted.]

e) evaluated the effectiveness of the registrant's disclosure controls and
   procedures and presented in this report our conclusions about the
   effectiveness of the disclosure controls and procedures, as of a date within
   90 days prior to the filing date of this report based on such evaluation; and

f) disclosed in this report any change in the registrant's internal control over
   financial reporting that occurred during the registrant's most recent fiscal
   half-year (the registrant's second fiscal half-year in the case of an annual
   report) that has materially affected, or is reasonably likely to materially
   affect, the registrant's internal control over financial reporting; and

10.The registrant's other certifying officer(s) and I have disclosed to the
   registrant's auditors and the audit committee of the registrant's board of
   directors (or persons performing the equivalent functions):

c) all significant deficiencies and material weaknesses in the design or
   operation of internal control over financial reporting which are reasonably
   likely to adversely affect the registrant's ability to record, process,
   summarize, and report financial information; and


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d) any fraud, whether or not material, that involves management or other
   employees who have a significant role in the registrant's internal controls
   over financial reporting.

Date:  March 19, 2004

                                          /s/ Francis Smith
                                          Francis Smith
                                          Principal Financial Officer


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