i got xp pro sp3. after installing the free version of avast antivrus, i found that it was disabled. i found that the service was not running. when i try to start it, i get this error: "could not start avast antivirus service on local computer error 5 access is denied" i also get the following error when i try to start the service in safe mode: "error 1068: the dependency service or group failed to start." i tried using the special uninstall utlility to uninstall completely. but that didnt work. what do i do to fix this??