Can anyone help with protecting my PC?

I've always had trouble protectng my PC; and I'd like to make sure I'm doing it right. This is my current lineup of protection software, but I don't think I have a good lineup... And I'm always thinking I have way too many programs, so... I'm confused.

Firewall:

Windows Firewall

Spyware/Adware:

Xoftspy

Ad-Aware SE Professional

Microsoft Defender

Anti-virus:

NOD32

Norton Anti-Virus 2007

Can anyone help with protecting my PC?norton antivirus

I only use one thing to protect my computer, Kaspersky Anti-Virus. My computer is virus free and it consumes very little system memory while running. As far as removing spyware and adware I really like Spybot, it's free and works really well.

Can anyone help with protecting my PC?security

You have way too many programs, which makes you a paranoid.

I do have programs, but they've yet to catch anything except occasional e-mail worms. My list is:

* Norton Antivirus 2007 (licensed w/ subscription)

* Microsoft Defender (free, of course)

* Ad-Aware (haven't found anything serious yet)

* Spybot S%26D (haven't found anything serious yet)

* Sygate Personal Firewall