General cleaning procedures…
- Disable System Restore on Windows XP: http://support.microsoft.com/default.aspx?scid=kb;[LN];310405
- Clean your temporary files.
- Schedule a boot time scanning with avast. Start avast! > Right click the skin > Schedule a boot-time scanning. Select for scanning archives. Boot.
- Use a-squared, Free AVG Antispyware, SUPERantispyware or Spyware Terminator (trojan removers).
Are you using avast?