看你的情形好應該是nVidia吧，去底下的網址(選International File Size: 29.6 MB)
Version: 81.85
Release Date: October 20, 2005
WHQL Certified
.exe format自動解壓縮的

http://www.nvidia.com/object/winxp_2k_81.85.html

如果是7z要解的話用7-zip( free software distributed under the GNU LGPL )
http://www.7-zip.org/