Again, no... If the computer is infected, then downloading and installing a security program will NOT help. The majority of viri out there today are designed to shut down the heuristics as well as real time scanning, so if you install a security software to an already infected computer, you're not going to help it one bit. Hence the reason why I suggested the free online scan. Only after that scan has completed and we know for certain if it's infected can we go about by following the directions in the KB article posted above to remove the infection. After that's been completed and only after that's been completed should the user consider installing security software, NEVER EVER BEFORE.
AGAIN! we do NOT know if it's a virus or not. From what the OP posted it sounds like it might be a virus, but until the OP goes through the motions and reports back, there's no way to really tell for sure! Please stop posting things like the above quote. I don't know for sure if it is, it's impossible for you to know so don't say that it is until we KNOW! This is also a Trojan, it does not access things the user doesn't want other than their email contact list and that's only if the trojan is coded to do that. If not, it merely logs key strokes, that's it! Trojans do NOT typically harm the computer, the whole point of a trjoan is to keep it's existence on an infected machine a secret. Otherwise it cannot possibly do it's job. Furthermore, a virus, trojan, malware or bloatware all MUST be activated for them to perform their jobs. You can have the world's most deadly computer virus on your machine and until you activate it, it just sits there, doing N O T H I N G. As it's clear you don't know what you're talking about, I ask that you no longer post invalid suggestions. Also, please have a firm understanding of an issue before jumping in and spouting off random suggestions that would clearly do more harm than good.