I need a best software of antivirus, anti spyware, firewall. Which one is really best for my PC ?

If you're a smart user, then go for something minimal and free. Antivirus - AVG Firewall - ZoneAlarm Anti Spyware - none Because if you use your computer smartly, you won't really need those things.

A PC needs 3 types of protection. Anti Virus, Anti Spyware, Firewall. There is a guide on my PC help site on; What you need, Why you need it, Where to get it. All are free. http://www.phpbbserver.com/stevie19605/viewtopic.php?t=40&mforum=stevie19605

Kaspersky

I have tried (and purchased) many of them including Norton, McAfee, AVG and others. The one that works best for me, uses the least amount of memory, is easiest to configure, finds and blocks the most viruses, is The Shield Anti-Virus and Firewall.

It's mostly a matter of opinion what is best. For a Firewall, Comodo is the best at any price (it just happens to be free) and there's no question about that: http://www.personalfirewall.comodo.com/ For a free full-time antimalware, again stay with Comodo and their product BOClean: http://www.comodo.com/boclean/boclean.html The best on-demand antispyware scanner is (IMO) Superantispyware: http://superantispyware.com/ As for a free antivirus, the big three AVG, Avast, and AntiVir are all pretty equal, with Antivir rating somewhat higher in most tests, but AVG getting the nod for user-friendly...choose only one antivirus: AVG 7.5: http://free.grisoft.com/doc/2/ Avira AntiVir: http://free.grisoft.com/doc/2/ Note: I find it highly unthinking for a "Top Contributer" to say "stay away from anything that is free when it comes to spyware and antivirus. There is a reason why they free. They are not good." That is a most bogus and over-generalized statement. Just because you pay for something doesn't make it good; and just because something is free doesn't make it bad. There are *a lot* more bad pay-for products out there than bad free ones. Like anything else, you've got to keep your wits about you. ;-)

Linux. It's free, will make your computer faster and make you more attractive to women.

Try http://tipsfromruby-internetsecurity.blogspot.com/ for further help to keep your computer protected with regular virus protection and other related updates and news .

go to www.grisoft.com and get AVG . The pro version is the be all and end all . You wont need anything else

Well, if you really want yours computer to be protected, then you have to know couple of important things. First of all, stay away from anything that is free when it comes to spyware and antivirus. There is a reason why they free. They are not good. Second, to protect your pc, you'd need not one but at least three programs: an anti-virus, an anti spyware and a firewall. If you need some of the best software out there, then use Kaspersky anti-virus ( http://www.kaspersky.com/virusscanner ), True Sword, which is the best program you need to protect your pc from spyware (http://www.securitystronghold.com/true_sword.html ) and Agnitum Outpost Firewall Pro (www.agnitum.com). Dowload it and scan your pc, because these three things are the best programs you need. Good Luck!!