i am receiving a error that reads: 123 cannot start because the driver set is invalid driver initialization error

ive never used lotus 123 -> driver set sounds like an internal set of drivers. try a) reinstalling it, b) installing external drivers (mouse, display, etc) or c) removing all external drivers. - W0rm

Lotsa 1-2-3 experience here. Go to your lotus 1-2-3 directory. type INSTALL {enter}. This program allows you to create new "driver set" after specifying video, printers, etc. That said, be prepared for some guessing/retries as listed choices no longer reflect today's peripherals; and/or stick to just plain vanilla settings. DOS 1-2-3 is STILL the best of 'em.

When I load some of my 123 programs, I get the OUT OF MEMORY message but most functions seem to work ok. When I run the same program on my old Win95 computer I do not get the OUT OF MEMORY message. What's the problem with my Win98 system? Thanks for your help.

DOS based Lotus 1-2-3 likes EXPANDED memory. You can use emm386.exe to allocate EXTENDED memory to EXPANDED memory. Or, perhaps just copy the "device=c:\win95\emm386.exe....." statement from your 95 config.sys to your 98 config.sys. Don't forget, though, to adjust the path.