Infected users can remove the virus in two ways. You can download an "Anna Kournikova" software update from your antivirus vendor. Running this update will automatically remove the virus. If you do not have an antivirus solution you may wish to try one of the below listed sites for further information:
Computer Associates (http://www.cai.com)
CA is offering free downloads of antivirus solution InoculateIT from http://antivirus.ca.com.
Online scanning and repair at VirusScan Online (Requires a McAfee.com Clinic subscription (currently free for two-week trial!))
New signature file for McAfee VirusScan at http://download.mcafee.com/box_products.asp
Sophos has virus identity files for Sophos Anti-Virus available at http://www.sophos.com/downloads/ide/index.html
Symantec - (http://www.symantec.com.au)
Manual updates for Symantec's Norton AntiVirus are available from http://www.symantec.com/avcenter/download.html
Trend Micro (http://www.antivirus.com)
Updated virus pattern file #707: http://www.antivirus.com/download/pattern.asp
Free online scanning at http://housecall.antivirus.com
Or you can manually do it yourself. On your PC go to the Start button then Run and type Regedit. Open HKEY_CURRENT_USER. Click on Software and then delete either OnTheFly or OnTheFly\mailed. This is the name of the virus file in your Windows Registry. The virus should now be removed.