OK , you need :

A firewall - i would say the two most popular are Zone Alarm and Comodo......so choose ONE of these.

Anti-Spyware - i suggest you install AVG Anti-Spyware AND Spybot Search and Destroy. These two apps will work nicely alongside your installation of adaware 2007.

Prevention software - Spyware Blaster.......download it , install it and then check for updates. It will then run quietly in the background . You don't need to do anything else with it apart from regularly checking for updates.

All these programmes are FREE and links to the sites can be had....here
So, that's the main protection options covered.

Now i presume you're using Internet Explorer for your browsing ? If so i don't really think you need the panicware pop up stopper as IE has a built in pop up stopper ( and antiphishing ). It's also important to check you are fully updated with Microsoft updates , which includes Internet Explorer 7.

That's the alternative Norton security options covered . If there's anything features of Norton that you use , and I've not covered , just let us know.

Any more help needed , feel free to post.