EXHIBIT 5.1
 
                  [Letterhead of Gibson, Dunn & Crutcher LLP]
 
                                 April 22, 1999
 
(213) 229-7000                                                     C 42208-00112
 
The IT Group, Inc.
2790 Mosside Boulevard
Monroeville, Pennsylvania 15146-2792
 
   Re: The IT Group, Inc. -- Registration Statement on Form S-4
 
Ladies and Gentlemen:
 
   We have acted as counsel for The IT Group, Inc., a Delaware corporation (the
"Company"), in connection with the registration by the Company of up to
$225,000,000 aggregate principal amount of the Company's 11 1/4% Series B
Senior Subordinated Notes due 2009 (the "Notes") with the Securities and
Exchange Commission on a Registration Statement on Form S-4 (the "Registration
Statement") under the Securities Act of 1933, as amended. The Notes will be
offered in exchange for a like principal amount of the Company's 11 1/4% Series
A Senior Subordinated Notes due 2009 (the "Old Notes") pursuant to that certain
Registration Rights Agreement dated as of April 9, 1999, between the Company,
the subsidiary guarantors thereof (the "Subsidiary Guarantors"), Donaldson,
Lufkin & Jenrette Securities Corporation and Salomon Smith Barney (the
"Registration Rights Agreement"). The Registration Rights Agreement was
executed in connection with the private placement of the Old Notes.
 
   We have also acted as counsel for the Subsidiary Guarantors in connection
with the registration of the subsidiary guarantees of the Notes by the
Subsidiary Guarantors under the Registration Statement (the "Subsidiary
Guarantees").
 
   The Notes will be issued pursuant to that certain Indenture dated as of
April 9, 1999, between the Company, the Subsidiary Guarantors and The Bank of
New York, as Trustee (the "Indenture").
 
   We are familiar with the actions taken and to be taken by the Company and
the Subsidiary Guarantors in connection with the offering of the Notes and the
issuance of the Subsidiary Guarantees. On the basis of such knowledge and such
investigation as we have deemed necessary, we are of the opinion that: (i) the
Notes have been duly authorized by the Company and, when issued in exchange for
the Old Notes pursuant to the terms of the exchange offer described in the
Registration Statement and the Indenture, will be validly issued and will
constitute legal and binding obligations of the Company; and (ii) the
Subsidiary Guarantees have been duly authorized by the Subsidiary Guarantors
and, when issued along with the Notes in accordance with the terms of the
Indenture, will be validly issued and will constitute the legal and binding
obligations of the Subsidiary Guarantors.
 
   We hereby consent to the filing of this opinion as an exhibit to the
Registration Statement and to the reference to this firm under the heading
"Legal Matters" contained in the prospectus that forms a part of the
Registration Statement.
 
                                          Very truly yours,
 
                                          /s/ Gibson, Dunn & Crutcher LLP
                                          GIBSON, DUNN & CRUTCHER LLP