Trying to find solutions...

I have a sort-of dual O.S. setup. I have Win98 on one hard disk and I have
Win XP on another. The first drive is from an older computer. Some of the
programs that are on the old drive are useful to me but unfortunately, the
hard drive is the only place they now exist. No backup CDs or anything else.
I was trying to transfer the files from the Win98 drive to the Win XP drive
but the programs do not work properly in XP. So I decided I would leave them
where they were and just boot into the other hard drive via BIOS when
necessary. However, the drive is not recognizing the new video card, so I
tried to use the CD to upload the new drivers only to find that I had no
access to the CD! Now I am also getting an error message at startup (in 98)
that says: "Invalid VxD dynamic link call to device number 4F, service 74.
Your Windows configuration is invalid. Run the Windows Setup program
again..." Won't this overwrite everything?