Jim, you didn't have any success with the Asus drivers BeefJerky recommended on an Asus card? He says he's running them perfectly on his XP.
By the way, those morons at PC World wrote in their review of Microsoft Plus XP that SereneScreen Aquarium is "not compatible with XP." I fired off a note requesting a correction in their web article and the printed edition. It has been a week and when I get home, I'm going to send them a more demanding e-mail. Wonder if you can sue PC World for lost sales.
http://www.pcworld.com/news/article/0,aid,67167,00.asp
"Microsoft licensed this screen saver from SereneScreen, whose Windows 98/Me version does not work in Windows XP."