EXHIBIT 3.75

                          CERTIFICATE OF INCORPORATION

                                       OF

                             RHCI SAN ANTONIO, INC.

1.       The name of the corporation is:

2.

                             RHCI San Antonio, Inc.

3.       The address of its registered office in the State of Delaware is
Corporation Trust Center, 1209 Orange Street, in the City of Wilmington, County
of New Castle. The name of its registered agent at such address is The
Corporation Trust Company.

4.       The nature of the business or purposes to be conducted or promoted is
to engage in any lawful act or activity for which corporations nay be organized
under the General Corporation Law of Delaware.

5.       The total number of shares of stock which the corporation shall have
authority to issue is One Thousand (1,000) and all of such shares shall be
without par value.

6.       The board of directors is authorized to make, alter, or repeal the
bylaws of the corporation. Election of directors need not be by written ballot.

7.       The name and mailing address of the incorporator is:

                                 Vivian B. Crane
                                 McGlinchey Law Firm
                                 643 Magazine Street
                                 New Orleans, Louisiana 70130

         I, THE UNDERSIGNED, being the incorporator hereinbefore named, for the
purpose of forming a corporation pursuant to the General Corporation Law of
Delaware, do make this certificate, hereby declaring and certifying that this is
my act and deed and the facts herein stated are true, and accordingly have
hereunto set my hand this 8th day of August, 1991.

                                                     /s/ Vivian B. Crane
                                                     -------------------
                                                     Vivian B. Crane