Are ESET NOD32 and Spybot S&D any good? That's all I got at the moment.

Forgot to mention the excellent "Shields up" site, you can do a port test and various other security tests here.
Scroll down the page to the "shields up" section.
http://www.grc.com/default.htm

Spybot is good just keep it updated as with all programs of that type, can't comment on ESET NOD32 as I've not used it but it won CNET editors award so it must be pretty good:clap:
http://www.eset.com/company/article/...contentID=5980

How often should I do full scans with S&D and eset do you think?
weekly?

ESET is Perfect.I hadn't any problems with it.

AmigaOS 4.1 :hihihi:

F-Secure
Keiro-Sunbelt Firewall
Ad-Aware

No intuders, just some usual tracking cookies...

Avast and some decent passwords on the network/router/etc.

Hell, I don't even know the router password... Probably not good

HINT: it's "admin"

lol nice one.

I use linux with firestarter(I prefer GUI based firewalls rather then terminal based), and with windows... Nod32, ZoneAlarm Pro, Spybot S&D and Ad-Aware.