1) I found a used version of both games on Amazon for around $15-25 but it says Windows XP/2000/98 (I have Vista). Am I good to go with that? I'm aware they came out before Vista was introduced, but wasn't sure if, for some reason, newer versions of the game were released specifically for Vista. Probably a really stupid question but I'm not very familiar with how these things work.
my pc has Vista and it works fine. occasionally when i install the game, Directx doesn't install. not sure if thats Vista or something else. i also know several of the modding programs work with Vista. if you start skinning, you might have to run the programs as an administrator. also, i can't get 3dsmax or 3dripperdx to work. i don't know if these are compatible with vista or not.
2) I know there are multiple controller options out there for PC games. Can someone recommend a good one for these games. I've played them a million times on XBOX/360 and something comparable would be great.
i use a regular xbox controller. splice the line at the end and make it into a usb port. then download xbcd and install it. then when you run the game, go to control options, switch it to xbox controller, and match up the keys.
3) Can't seem to find a PC version of XML1 or MUA2...seems like they don't exist. Am I correct?
sure. i know mua 2 doesn't.