Most likely, its quite a common trojan so if you update your AV and do a full system scan it should be deleted. Spybot seach & destroy will find this trojan and its free.
You will also have to delete the bot as the trojan is binded with it.
http://www.safer-networking.org/en/mirrors/index.html
To everyone else i would suggest you get some sandbox software so you can just open any suspicious files in there and they can only effect the Virtual Machine unless its an advanced rootkit of course
"SandBoxed" is a good one dont think its free though