If I install a new antivirus program, is it always necessary to uninstall the current one?

I'm considering using avast! instead of Norton.

If I install a new antivirus program, is it always necessary to uninstall the current one?husqvarna

YES 100% YES

They will see each other as viruses.

I recommend the following FREE software.

I use all of the following Free software with Windows XP SP2 and Internet Explorer with MSN toolbar and the pop-up blocker turned on and have never had a single problem with my computer sense Microsoft came out with SP2. (knock on wood.) (And be sure to keep Windows Updated)

The best Anti-virus is: AVG Anti-Virus Free Edition. (www.grisoft.com)

The Best Spyware defense is: SpyBot Search and Destroy (www.spybot.info)

AND: AdAware SE (www.lavasoft.com)

AND Spyware Blaster (http://www.javacoolsoftware.info/kb/)

The best Firewall besides the one that comes with Windows is: Zone Alarm (http://www.zonelabs.com/store/content/co... or just (www.zonelabs.com) and select the FREE version.

These are all FREE and are all that are required. There is no reason to pay for this kind of software, except to give a donation to the writers if you can.

ALL the above programs are recommended and should be run on a regular basis. With some the free versions they must be run manually.

The best way to avoid getting any Malware (virus, Trojan's, spyware, etc) is to practice safe computing. Microsoft and many others have countless articles on the subject of safe computing. (something I think should be taught in schools)