Need HELP for configure IBM Thinkpad 755C Lap-top for using with Ritty (Bitty) and WF1B RTTY. Configuration is: 486dx, 50MHz, 20MB ram, 810MB hdd, IBM soundboard (active in WIN95 and DOS) with AFTPS140 driver sw but not run with Bitty or any SB rtty sw (like BTL ...). TU and 73 de YU7AE