having had problems with pc slowdown, pop-ups & PopNav taking over my browser I found advice and used Jasons-toolbox which then referred me to here I believe to d/load & use Spyware Blaster and it also recommended Spybot. Great software... initial use found about 120 spyware entries... blasted and used Spybot again and found @20 new entries. Cleaned it again. However, next time I booted the pc, the browser went to PopNav.com instead of Comcast.net as the default. Tried to go to "tools".."internet options" and got a message "Restrictions...This operation has been cancelled due to restrictions in effect on this computer. Please contact your system administrator." There is NO system admin..just me and I am at a loss as to what to do next. I somehow need to restore to default settings... AND get PopNav off my PC. Has PopNav REALLY taken over my PC COMPLETELY. Any help will be greatly appreciated. Will d/loading Netscape Nav..then deleting IE browser; then re-d/loading IE browser from internet help? Is it even possible. Then how do I kill PopNav and make it stay dead!!! Darn thing has multiple lives!!