How do you clean it out if you already have it?
If you're running an anti-virus program like McAfee or Norton, scan then follow their instructions. You can also run a scan online at either of tthee following links. You will also need to download, install, and run Spybot Search & Destroy for all the malware that's been associated with the VML exploit. You will probably need to run other malware detectors, since one rarely catches and removes all malware. In WinXP run the Malicious Software Removal Tool located in your All Programs menu.
TrendMicro Housecall
http://housecall.trendmicro.com/
avast! Online Scanner
http://onlinescan.avast.com/
Download link for SpyBot Search & Destroy
http://www.spybot.info/en/download/index.html