Trojan ADH

I made a mistake by posting in another forum, this should be here:

 

Hi Everyone,

 

I got a problem with a trojan callend Trojan.ADH. My Norton IS finds it, but can't remove it. It only says it can rescan my laptop or ask for help. I did both, but the fix posted by symantec did'nt work either. I am not great with computers, but know my way around them, but i didnt see a fix for Windows Vista, which is running my laptop (and great until the trojan appeared. 

 

I downloaded Ad-Aware, but that didnt fix it either.

 

Can someone please help me? I really want this off my system!!

 

Thanks,

 

C