Can Someone Please Tell Me If.........?

Can someone please tell me if it's alright to use two virus scanners on my computer? I currently have Norton Antivirus 2007, but something tells me it's not doing it's job. I had a bunch of spyware popups showing up %26 my home page got changed. I cleared out my cookies, changed my homepage back, %26 somehow (I don't know how I did it) I saw my browser wasn't through internet explorer anymore, it was through Real.com...So I got rid of my real player, closed my computer down for a few hours, came on %26 they were all gone...after I came back on, Norton did a scan %26 found there was a trojan horse virus on my computer %26 it deleted it automatically...I'm thinking of adding Alwil Avast! 4.6 home edition to my computer, but the last time I had more than one, my computer seemed to attract more viruses %26 spyware :(....What do you think? Should I or shouldn't I?...........Thanx

Can Someone Please Tell Me If.........?spyware removal

u can not run 2 anti virus at the same time on your computer. either it will crash or it will not allow u to install another antivirus. this is the way it is. and norton anti virus is good just keep it up to date and do a scan every week once and u will be safe. avast is not better than norton so dont change to it.

Can Someone Please Tell Me If.........?virus protection software