This is directly from the CD. It's for version 2 of this adapter. Linksys doesn't currently host version 2 on the site, and although the model number matches, it won't work with your ver 2 adapter! This is the XP driver.
The following files are found inside the driver download file.
|USB200M2.inf||4.3 KB||10 May 2005|
|USB200M2.sys||18.0 KB||21 Apr 2005|