This disk has two new RTVGA drivers for CADKEY: 1. for 16-color modes (RC16.EXE), and 2. for 256-color modes (RC256.EXE). How to install new driver for CADKEY: 1. Run CONFIG program to reconfigure your program environment. { Please append RC1M.DAT to GRDEV.DAT before run CONFIG } 2. Load driver, by type RC16 or RC256 under DOS. 3. Replease intro.dat in your path. (\CKGR\) 4. Start your main program. (\CKGR\CKGR) Note: 1. Recommend rename INTRO.DAT to INTRO.OLD,and copy new INTRO.DAT form RTVGA utility disk. 2. RC512K.DAT and INTRO.DAT locate at \CADKEY of RTVGA utility disk.