I recently installed the latest driver for my ATI Radeon X200 IGP (CX_27256.INI) onboard video. Since then, the main map displays at a much smaller resolution than it used to - so small that the various unit icons are barely distiguishable. Other screens are the same as they used to be. For the record, I'm playing v. 1.22 on Win XP Home.

Are you zoomed out accidently? Hit the 'z' key.