No need to pay for a firewall, when there are perfectly acceptable free ones, such as the 2 John
Here's 2 more to choose from, that are listed in our Freeware replacements for common commercial apps
thread:KerioOutpost Firewall Free
You mentioned Norton and Mcafee internet security.
If these both include an antivirus, you need to disable one of them.
As many Spyware apps as you want.(No need to have spyware apps running at startup. Run them manually twice a week, or more, depending on your surfing habits.)
2 AVs, or 2 firewalls, running together, will conflict with each other, rendering both ineffective.
Besides the 2 John
and Spybot S&D
, I would also recommend aČ free
, and SpywareGuard