I've installed Overseer (from DVD) but have various tech issues (no video, no background music, random error message, etc.). It seems that this game is a pain to run on XP w/ the DVD version. I've been reading the GOG.com forums and the pages from
diego to find solutions.
Everybody says MIDI music has to be turned off due to differences in encoding pre- and post-win2000. That's too bad - music can really add to the atmosphere.
I'll have to keep tinkering but I don't have much time in the next few days to invest into tweaking this, so I may be late to the playthrough by a couple of days.