The firewalls I mentioned are specifically good b/c they also include a program control option. Basically, if it gets onto your PC, and runs, it'll have to go through the firewall before even installing.
So, you could have the latest and greatest antispyware product on your machine, and they'll still miss something.
Personally, I'd not use SpySweeper - that's just my opinion, though.
I'd use Nod32 like you're already using, Windows Defender as it's already installed anyway, and Comodo Internet Security. On Comodo, disable the antivirus, since you already have Nod32 running.
How else can I say it? I don't think you need SpySweeper, and I think it's far from the best antispyware/antimalware products on the market. Don't believe me, just do a Google Search on
SpySweeper Review, yourself, and you'll know.
In the world of the web, you need to have at least these for security:
1. Hardware Firewall - check
2. Software Firewall - (not checked - yet)
3. Strong Antivirus - check
4. Good malware protection outside of AV is good to have, but probably not as important as the above three. If I were going to use any antimalware/antispyware products, I'd use any of the following:
1. Malwarebytes Antimalware - just for scanning
2. SuperAntispyware - protection and scanning
3. SpywareBlaster - protection only.
Then there are other options as well. You could check on your DNS server settings for your router. Are your DNS servers the most secure for your area? For instance, OpenDNS.org's DNS servers are often safer than those of most ISPs, or so I've read, and they generally perform as well or better than the ISPs - at least in my testing.
Another option? You could use a separate port blocker process other than the firewall. I've read of one called Protowall, though I've not tried it yet. It uses custom block lists to help protect your machine from any IPs you provide it via a list - I don't think you'd want to manually create one, there are those available on the web already preconfigured and updated regularly.
So, just depends upon how far you want to go, but minimum nowadays should be (if at all possible): Hardware firewall, software firewall, good antivirus app.
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"If to err is human, then I must be some kind of human!" -Me