Built in browser popup blocking has evolved to thepoint that Popup Manager.
BSEditor: Popup Manager efficiently gets rid of popups. It can do the following:

Browse the web as you normally would.
When a popup is blocked the widget will turn red.
Widget shows information about blocked popups.
Clicking on an E icon will open a blocked popup.
Popups that you have initiated will not be blocked.
Right click the widget to set options for the site you are on.
Temporarily disable by holding down the CTRL key.
Works with IE 5 & 6 on Windows 95/98/ME/NT/2K/XP. you can free download Popup Manager 1.0.1.5 now.