After running Linux in my IBM Thinkpad 380Z (only 3GB HD, but enough
for purpose) I decided recently to replace it with Win98SE. This I
did, successfully except that the monitor screen has shrunk to a mere
170x130 mm (from 270x200) and is stuck at 640x480 and 16 colours,
whereas from the User Guide it should support up to 1280x1024.

This reduced screen is too small for convenient use, although
otherwise the computer seems to be working normally.

Much searching and experimenting have failed to provide any
explanation or cure. Presumably it is a driver problem, but I have
been unable so far to identify what should be the proper driver, after
consulting Windows, the User Guide, the IBM site and the internet
generally.

Can anyone suggest where I have gone wrong and how it may be
corrected?