I'm happy for you, and thank you for your kind comments
There are MANY dangers nowadays to your computer, and not just on the internet.
Infections can also enter your computer through infected USB jump drives, cd's/dvd's etc.
This site has many posts from users experiencing HORRENDOUS problems.
We can not afford to be lax in taking precautions against "bad things".
To begin to answer your question on what is NECESSARY to run, you need a firewall running at all times
.Please see item #5 in this topic regarding use of a firewall:
http://www.bleepingcomputer.com/forums/t/34773/preparation-guide-for-use-before-using-malware-removal-tools-and-requesting-help/ZoneAlarm offers a free firewall, and there's a link to it here:
Freeware Replacements For Common Commercial Apps
I have used ZoneAlarm and like it.You need to have an antivirus program running at all times.
You now have AVG. Make sure it is updated daily, scans daily, and DO check the scan results daily
For me, personally, I run CCleaner DAILY (when I am done using the internet) because trash/junk accumulates, and makes my computer run slower, and that makes me CRAZY.
With regular use of CCleaner, you will see that AVG accumulates approx 50mb ea day that CCleaner will delete.
I used to use ATF Cleaner, and liked it. Then I found CCleaner, and liked that better. (Just a matter of personal preference. There wasn't anything wrong with ATF Cleaner.)
I am not familiar with Eusing registry cleaner, so I am not able to comment (intelligently) on that.
A good alternative (if you are interested) to AVG Free is Avast.
You can find a link to Avast here:Freeware Replacements For Common Commercial Apps
(I saw a comment from a Moderator on this site, that said they use Avast, so that means it is reputable.)
I have a-squared, but do not use it on a daily basis. Am keeping it for "just in case".
Kapersky Online Scanner isn't something I do daily, or even weekly. It's just one of those things I keep a link to,
for "just in case". If I'm not having issues, or am not suspicious, I don't bother with it.
I have Malwarebytes' and SUPERAntiSpyware, and have been keeping them updated, and scanning with both every 2 to 3 days, because I recently had an infection. Go with the theory "better safe than sorry"
, because you can always scan with one or the other and then go to bed and leave it running, and let it scan during the night. It takes LESS time to do this, than it does to fix infections.One of the most important tools of Prevention is KNOWLEDGE.
PLEASE take the time to read (and read again):How Malware Spreads - How did I get infectedhttp://www.bleepingcomputer.com/forums/t/287710/how-malware-spreads-how-did-i-get-infected/How Did I Get Infected?, With steps so it does not happen again!http://www.bleepingcomputer.com/forums/t/2520/how-did-i-get-infected/
Freeware Replacements For Common Commercial Appshttp://www.bleepingcomputer.com/forums/topic3616.html
Anytime I have an infection, I scan, scan, scan, and then scan again.
I KEEP scanning until ALL scans come up "clean" (zero infections).
Also, anytime I have an infection, I turn off System Restore to delete all restore points.
After I am confident that the infections are fixed, I turn System Restore back on.
I keep an eye on how many/what processes show as running in Task Mngr (Processes tab). Many times, this is my first clue there is a problem, just noticing that something extra is running. While it isn't a foolproof method, it has helped me in the past. It is not necessary to memorize it verbatim, but the more familiar you are with the normal processes, it will enable you to recognize something that is suspicious, and might need further looking into (such as using Process Explorer to view a command line for a rundll32.exe that suddenly starts running in Task Mngr).
I also check msconfig Startup tab fairly regular, just to make sure that there are no new entries.
Warm Regards ,