1. Read this:
http://hpl.hp.com/personal/Jean_Tour.../Wireless.html (there's way more information than you need here, just read the parts that apply to you)
2. In the very, very likely instance that you need to use NDISWrapper, read this:
http://ndiswrapper.sourceforge.net/phpwiki/index.php/
3. Pay particular attention to whether or not your card is on the 'supported cards list' (Hint: I checked and while they don't mention your card specifically, it should work)
4. Follow the very useful, helpful, and specific installation instructions linked to from step 2.
5. If you have any more problems, post back to LQ and you'll be helped.
Hope this works out for you,
Will (sitting outside, surfing on my wireless connection)