Posted 06 September 2009 - 04:22 PM
I am a relative novice when it comes to security, and I am sure some of the great mods will be able to help you out more with this, but I'll give you some advice anyway.
First off, download MalwareBytes, and SUPERAntiSpyware. Scan with each, as one programme will detect what the other misses.
Secondly, download avast!, or Avira (but not both) and perform a scan. If you already have an Antivirus installed, and want to install one of these free Anti Viruses, I would reccomend you uninstall it via Add or Remove Programmes, or for the stubborn buggers, use Revo Uninstaller.
Next, download Ccleaner. You might have loads of unused, and unneeded files clogging up your computer, taking up space and speed. Remove all the stuff you know you need removing, like your internet cache, or temporary internet files. However, I do not reccomend you remove the advanced stuff, or clean the registry if you do not know what you are doing.
After that, I would reccomend you install a firewall, such as Zonealarm, or Online Armour. Again, I would not reccomend you run more than one firewalls at once. This will block nasties trying to come into your computer.
Finally, if you have anymore questions, including question about Rootrepeal (to remove rootkits), ComboFix, and HiJack This, all of which I do not know much about, I would reccomend you ask a member of the HiJack This team, or a Moderator.
Oh, and make sure to read the stickies here at Bleeping Computer, they could come in handy.