NOTIFICATION OF LATE FILING

                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                   FORM 12b-25

                           NOTIFICATION OF LATE FILING
                               CUSIP: 63936G 10 1
                             SEC File No.: 000-50340


(Check one):  [ ] Form 10-K   [  ] Form 20F  [  ] Form 11-K  [x] Form 10-Q
              [ ] Form N-SAR  [  ] Form N-CSR

                         For Period Ended: June 30, 2007

                       [  ]  Transition Report on Form 10-K
                       [  ]  Transition Report on Form 20-F
                       [  ]  Transition Report on Form 11-K
                       [  ]  Transition Report on Form 10-Q
                       [  ]  Transition Report on Form N-SAR

      For the Transition Period Ended: ___________________________________

Nothing in this form shall be construed to imply that the Commission has
verified any information contained herein.If the notification relates to a
portion of the filing checked above, identify the Item(s) to which the
notification relates:

PART I - REGISTRANT INFORMATION

Navstar Media Holdings, Inc.
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Full Name of Registrant

Premier Document Services, Inc.
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Former Name if Applicable

26, Chaowai Road, Suite A2205,   Chaoyang District, Beijing, 100020, China
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Address of Principal Executive Office (Street and Number)






PART II - RULES 12b-25 (b) AND (c)

If the subject report could not be filed without unreasonable effort or expense
and the registrant seeks relief pursuant to Rule 12b-25(b) [Section 23,047], the
following should be completed.
(Check box if appropriate)

     [X]  (a) The reason described in reasonable detail in Part III of this form
          could not be eliminated without unreasonable effort or expense;

     [X]  (b) The subject annual report, semi-annual report, transition report
          on Form 10-K, Form 20F, 11-K, Form N-SAR or Form N-CSR, or portion
          thereof, will be filed on or before the fifteenth calendar day
          following the prescribed due date; or the subject quarterly report or
          transition report on Form 10-Q, or portion thereof, will be filed on
          or before the fifth calendar day following the prescribed due date;
          and

     [ ]  (c) The accountant's statement or other exhibit required by Rule
          12b-25(c) has been attached if applicable.

PART III - NARRATIVE

Because of the logistical issues associated with the geographical constraints of
business operations within the People's Republic of China, additional time is
needed to ensure accurate preparation of the Quarterly Report on Form 10-QSB for
the period ended June 30, 2007.

PART IV - OTHER INFORMATION

     (1) Name and address of person to contact in regard to this notification:

          Edward Meng, CFO
          Navstar Media Holdings, Inc.
          26, Chaowai Road, Suite A2205,
          Chaoyang District, Beijing, 100020, China


     (2) Have all other periodic reports required under Section 13 or 15(d) of
the Securities Exchange Act of 1934 or Section 30 of the Investment Company Act
of 1940 during the preceding 12 months or for such shorter period that the
registrant was required to file such report(s) been filed? If the answer is no,
identify report(s).

[X] Yes [ ] No

     (3) Is it anticipated that any significant change in results of operations
from the corresponding period for the last fiscal year will be reflected by the
earnings statements to be included in the subjectreport or portion thereof?

[ ] Yes [X] No

If so, attach an explanation of the anticipated change, both narratively and
quantitatively, and, if appropriate, state the reasons why a reasonable estimate
of the results cannot be made.

     Navstar Media Holdings, Inc. has caused this notification to be signed on
its behalf by the undersigned thereunto duly authorized.


Date:  August 14, 2007         By:  /s/ Edward Meng
                                    ------------------
                                    Edward Meng, Chief Financial Officer