i am computer stupid and need some help

i downloaded avg a while ago. i have an hp with vista. that is all i know. and then i downloaded comodo. I used to be able to go to ninja video and watch anything i wanted, anytime i wanted. Now I can not. I had to download the divx web player and it gave me some gaming harbor toolbar, which had adware so comodo has quarantined ( i think??) it and now i cant watch ninjavideo:( Mainly I can play on facebook and check email and loooove top print pictures of my kids. Can someone please help me. It sucks not knowing what you are doing. I have been reading up on it and learning what a virus/adware/spyware…lol how to ya know…

This site must not be to safe if comodo finds malware after downloading something from it.