One of the original threads on this topic got necroed recently, so there's a short (but recent) answer here:
https://project1999.com/forums/showt...=11949&page=26
Really though, this sort of thing
should be answered on
https://wiki.project1999.com/Visual_Enhancements. Everyone
should be able to go to that page and find everything they need about graphics upgrades (what options exist, which still work, how to install them, etc.)
Once upon a time that page did that, but it's now a little out of date, and I don't know the latest answers to update it. Hopefully once this thread gets answered, someone would be willing to take a sec to update the wiki?