I am new to community but am really impressed with everything I've read so far. I'm personally an apple guy (not a fanboy but just grew up with them) so I am completely lost when it comes to fixing my work PC. I need help! My computer definitely has some form of virus or malware or trojan horse or something, and I am trying to avoid contacting our outsourced IT guy because if its something I can take of myself, I don't want to pay his hourly rate to do so. My computer started acting funny, worse and worse each day. The anti-virus program on our computers (it's called AVG) keeps finding all sorts of stuff but can't seem to remove or fix it. After a few days, my desktop changed to black with a warning reading something along the lines "Warning computer affected blah blah". I tried to change the background but its locked on a file named "ahtn.htm" which also appeared in the various virus reports. If I had to guess, this is the culprit. Can anyone help!?