Hi, I am not such a computer science pro but since no one has answered you yet I thought just hearing someone’s opinion might make you feel better.
Since your anitvirus keeps turning off I would say this is a crucial matter.
I never download file cleaners or registry cleaners and spy removers and the like because it seems they do more harm than good.
I recently downloaded the free version of Mcafee too and it never even opened when i tried to open it.
I owe that to my system being compromised if you care to read the post I will make after I finish replying to you. The advice I would give to you is ; You can do a system restore to the closest point before you did the computer cleaner, that would be the simplist choice.
Or I hope you have the original software discs that came with your computer
so you can reinstall your computer software.
Copy any documents, pictures etc onto a usb or cd and hold them till you reinstall.
The system restore should work fine though, I would not use that computer cleaner anymore and the Mcafee doesn’t seem to work with vista. I have it on an old computer and it still checks for viruses, but it didn’t open up on my vista.
I use Norton security 2008. I don’t know if you can purchase it anymore.
It has better options for manipulating firewalls and programs. Its logs show the ip addresses that connect to you and it has an option to remove unwanted shared folders that the newer versions don’t have. I have tried 2009 and norton 2010 and like 2008 much better so I keep it. I would definitely invest in a store bought or online bought firewall. I have never tried "Zone alarm" but heard good things about it and its only 30 dollars on the internet. Or you can inverst twenty more dollars and get the Norton, you might even get a fair deal and find an online coupon for Norton, which ever protection you get, just dont get the anitvirus , get the security one, the security blocks all viruses plus also helps you protect your computer from attacks,
and I seem to keep getting attacked constantly, get this, I have roaming files and I dont have wireless. I would repair your computer right away.
Hope this helped.
I honestly don’t think there is any other way around it,
you have to undo what that cleaner did
and the only way to do it is go back before it happened or reinstall your computer software which is very easy.
Take care.

Thank you so much!