Setup AVG AntiVirus 2011 Scan
Once you have AVG AntiVirus 2011 completely installed, launch the program. You'll probably need to wait for a moment for the updater to update the definitions for the scanner. You'll want to let it do this, since the definitions that came with the installation are probably fairly out-of-date.
Once it's updated properly, you can just run a manual scan by clicking the "Scan Now" button on the left side. There should be a slider on the bottom of the scan screen that lets you choose the scan's priority. "User sensitive" actually seems like a fine setting. It will use minimal resources while you're actively using the computer, and switch to high priority when you're away or inactive. Just sit back and let your manual scan run and scan your entire computer.
I imagine that you'll want to do something a bit better than this though. You probably want to actually setup AVG AntiVirus 2011 scans for the future too. Below "Scan Now," there's a button for "Scan Options." You can click this and choose to edit the scan schedule. It appears to be disabled by default, so you'll have to do this at least once.
You can choose to have the scans run at set intervals, or you can choose to schedule scans for certain times and days. The ideal way to do this is to schedule scans around dinner or during general downtime. If you usually watch TV at a certain time, schedule the scan for then and let it run at high priority. The beauty of scheduling AVG scans is that you can minimize the inconvenience.
I did see an option to have the scan run when the computer starts up, but that seems awfully annoying. While it's a good idea to let AVG 2011 finish scheduled scans that were paused early, it seems like a bad idea to slow down your startup activity right after you boot up. This is going to be the one time that you're guaranteed to be using your computer.
Once this is done, you should be all set for your AVG Antivirus 2011 scans. Just stay updated and watch for any signs of trouble.
Screenshot by author courtesy of AVG Antivirus 2011 Free.