Although Googling takes this back to at least http://www.gamiko.co.uk/showthread.php?t=4043 and the Chinese author's http://ipvideo.512j.com/bbs/bmb/topic.php?filename=216 linked in the application appears dead, I don't see this in our PS3 Downloads section yet so here goes, from the source link above:
A Chinese programmer has put together a PS3 controller driver that works with standard USB HID. That driver is called SixAxisDriver, and you can grab it right http://www.hardcoreware.net/files/sixaxisdriver.rar. Simply run the install, load the driver, reboot Vista, and your controller will be identified and will start working!
We do, however, already have a several similar utilities in our archive including a Sixaxis PS3 Linux Driver For PC and a Sixaxis PS3 Win32 Driver For PC among others for those interested... the more, the merrier eh? :p More PlayStation 3 News...
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