Hi, welcome to the forums.

Please Help us to Help you In order to help fully we need more information…
- What OS are you using? is it up to date?
- What email program are you using - if applicable?
- avast! version and VPS file (virus database) number, e.g. 0436-4 (see about avast!)
- What was the virus name, what was the filename, where was it found
example (C:\windows\system32\infected-filename.xxx)?
- What actions have you taken to try and resolve the problem?
Also see this thread for further information and advice User’s FAQ.

This virus, takes advantage of several exploits that were patched by MS ages ago, you need to update your system, or it will be back again.

A search of these forums for win32:Gaobot will no doubt return many hits as this topic has been previously discussed a number of times. As will a google search.

General Advice & Tools for virus/trojan/malware removal

If you need more help, come back here with more info…