Add two more to your list, Spyware Blaster and Spybot Search and Destroy. Search Google, they're free.
Popups - Download and install the Google Toolbar. It stops popups cold.
Another note - Newer popups are run using Flash. Spyware Blaster has a Flashkiller setting. It will block the new Flash popups. But it also blocks any Flash that may run from a legitimate site. You'll have to experiment with what you want to see and what you don't.
Help - I have installed Ad-aware; but it doesn't seem to really stop anything. I have some nasty "dog" icon on my toolbar that hijacks everything and I can't get rid of it. What are the steps to secure my system more firmly through Windows XP. I haven't installed Service Pack 2 yet. AND I have a problem with my flat screen looking really "wavy" when I scroll up and down. HELP PLEASE?