tool that should only be used with and expert guiding you. If you are all set with your problem you don't need it any more you should not use it again and can get rid of it. There are more explanations in this thread at Bleeping computer. Read the posts by Quietman and any of the others that are part HJT team or other staff there.
Awhile ago I had some trouble with viruses/malware on my computer and called a tech guy who was very helpful and got things working again. He installed the following three antivirus programs: AVG Free 8.5, Malwarebytes 1.34, and ComboFix. The first two I am familiar with and can navigate pretty easily. ComboFix, however, is another story. According to what I've read/heard this is not a program for an inexperienced user (me). I'm pretty much afraid to even click on the icon, as when I do, strange things happen. My question is, do I really need ComboFix if I have the other two programs? Is it really DOING anything? Considering I don't ever update it (or touch it at all for that matter!). I've never had any viuses/malware that couldn't be gotten rid of using either AVG or Malwarebytes.
Should I leave ComboFix alone or can I uninstall it? The lack of understanding it is what's bothering me. I'd be grateful for any explanations.
P.S. My OS is Windows XP.