XP should work just fine , what issues are you having running XP?Can I make a Pokemon game in RPG Maker 2003?
The problem is that RPG Maker XP doesn't work on my Windows XP PC.
You can use the programs FakeRes and AltWindowDrag for running any RPG Maker on lower resolutions.You need to have a screen resolution greater than 1024x768 to run the program, otherwise it would show error message, but sometimes at other resolution it would work and would not. 800x600 isn't the case here