This PCAD driver can ONLY support RTVGA extended 16-color display mode. The disk contains following driver: RP800.DRV -- 800x600 16-color driver RP1024.DRV -- 1024x768 16-color driver RP960.DRV -- 960 x720 16-color driver RP768.DRV -- 768x1024 16-color driver Note: You must copy PCADDRV.SYS to your root directory. By changing the "display" line, you can select from one of four drivers. E.g., the following content of PCADDRV.SYS can be used to select 800x600 16-color driver: mousegain high 1.2 roundlines no textsize relative 1.0 1.0 system \pcad\sibmpc.drv input \pcad\imousys.drv display \pcad\rp800.drv To test the driver, just run PCCARDS under DOS. To compare the testing results, try to modify PCADDRV.SYS file into: mousegain high 1.2 roundlines no textsize relative 1.0 1.0 system \pcad\sibmpc.drv input \pcad\imousys.drv display \pcad\dibmvga.drv