Well I don't know about redundant as Ad-Aware is used just for scanning in the free version I recommended and Spyware Blaster is used for a perimeter shield. In this case they would not be redundant
@jbcohen: One GREAT website that you can use is Free Software Downloads and Software Reviews - Download.com
which is many freeware and shareware programs you can download. It's a great and secure website hosted by the infamous Geek Squad. You can find so many app's there that it is unbelievable. I would recommend not download any P2P software as they are major security risks.
Also after your license for McAfee is over I would recommend replacing it with AVG as it is NOT a resource hog like Norton, it updates very EASILY, and its quick to the point GUI (Graphic User Interface) is lovable.