Best free and not free computer protection?

i want proffesional answers only! i.e.: computor engineers, software writers, etc...

list one free and one not free program you think is the best...

anti virus

anti spyware

firewall

or just internet secutiry in general

computor clean up

registry clean up

or the whole package in one sort of things

...

the reason i'm asking is because i think my computor has a virus, internet explorer just freezes over and over again, comp. runs slow, and tried to install system mechanic but freakin messed up my computor.

please help ...... I DO NOT RECOMEND SYSTEM MECHANIC

Best free and not free computer protection?software

go read and run everything at

http://www.spywareinsider.com/removal.ht...

it worked for me and mine was really badly messed up. all the info you need is there. very simple instructions.

Best free and not free computer protection?vincent

My recommendation ::

1. Norton Internet Security 2007(sw) / AVG Antivirus (free)

2. Superantispyware pro(sw) / Superantispyware(free) / AVG Antispyware(sw)

3. Superadblocker pro(sw)

4. NO FIREWALL AT ALL, Bcs Norton Internet Security does a great job

5. CCcleaner(Free) + Error repair pro(sw)

where sw = shareware (not free)