(re: QFG5 on XP?) You have to update qg5 to v1.2. Then go to http://www.geocities.com/TimesSquare/Arcade/7435/Goodies/Downloads.htm
and download the QFG5Win2k.zip file. Unzip the file into ur qg5 folder and run the file. After that u can access the game normally.
If ur cursor does not display correctly – ALT-TAB to your desktop, and then maximize ur game again. Thats about all the issues related with Win2K/XP and QG5. Enjoy the game