internet explorer, homepage

[craig]

my homepage keeps changing to popnav and opens
automaticaly, i have to do <ctrl> <alt> <delete> to
close it down. can anyone help please,,,i have done a
norton anti virus scan and dont appear to have a
virus,,,,,im stuck

 

[BobC]

my homepage keeps changing to popnav and opens
automaticaly, i have to do <ctrl> <alt> <delete> to
close it down. can anyone help please,,,i have done a
norton anti virus scan and dont appear to have a
virus,,,,,im stuck

You have likely been hi-jacked by spyware. Try Spybot Search and Destroy
http://www.safer-networking.org/
Or Adaware
http://www.lavasoftusa.com/