| 1 | SC TO-T | RODGER O. RINEY FOR COMPUTER RESEARCH, INC. |
| 2 | EX-99.A1.A | OFFER TO PURCHASE - DATED AUGUST 4, 2000 |
| 3 | EX-99.A1.B | FORM OF LETTER OF TRANSMITTAL |
| 4 | EX-99.A1.C | FORM OF NOTICE OF GUARANTEED DELIVERY |
| 5 | EX-99.A1.D | FORM OF LETTER TO BROKERS, DEALERS & OTHER NOMINEE |
| 6 | EX-99.A1.E | FORM OF LETTER TO CLIENTS |
| 7 | EX-99.A1.F | PRESS RELEASE |
| 8 | EX-99.A1.G | GUIDELINES FOR CERTIFICATION OF TAXPAYER I.D. # |
| 9 | EX-99.D1 | PURCHASE AGREEMENT - DATED JULY 7, 2000 |
| 10 | EX-99.D2 | 1ST AMENDMENT TO PURCHASE AGREEMENT - 08/01/2000 |
| 11 | EX-99.D4 | 1ST AMENDMENT TO FINANCIAL ADVISORY AGREEMENT |