I bought a new computer few days ago.I have installed the following softwares for protection:
1. AVG anti-virus free edition.
2. SuperAntiSpyware free edition.
3. spybot search & destroy.
4. Zone Alarm firewall.
5. CCleaner.

Are they conflict with each other?If they conflict what softwares are necessary to uninstall among them?And what softwares are necessary to install for better protection against virus,spyware,rootkit,hack etc.? I need a good decoration of free security softwares for allround protection. Pls help me.Those will all work fine with each other.

I would also suggest installing the following, which will not interfere with anything.

WOT - Web of Trust. WOT is a free Internet security addon for your browser. It will keep you safe from online scams, identity theft, spyware, spam, viruses and unreliable shopping sites. WOT warns you before you interact with a risky website. It's easy and it's free.

SpywareBlaster - Secure your Internet Explorer to make it harder for ActiveX programs to run on your computer. Also stop certain COOKIES from being added to your computer when running Mozilla based BROWSERS like Firefox.
* Using SpywareBlaster to protect your computer from Spyware and Malware
* If you don't know what ActiveX controls are, see hereThank you for your advice.But I have known from difference source that more than one anti-spyware software could damage the computer.In my computer I have installed both "SuperAntiSpyware" and "Spybot search & destroy" anti-spyware software.Besides, there is a component as anti-spyware in "AVG anti-virus" which is installed in my computer.So is it harmful for my computer? What is your thinking?You can install and use as many antispyware programs as you like. This is as long as they are scan only, no real-time protection.

Spybot search & Destroy does not have real-time protection other than Tea-Timer which I always suggest turning off anyway.

SuperAntiSpyware does have a paid version with real-time protection but if you didn't buy the license the real-time protection won't run.

SpywareBlaster only adds restrictions to your browser to block known bad web sites. It doesn't actually run.Thank you.How can I turn off tea timer?Disable Spybot's TeaTimer

1. Right click Spybot in the System Tray (looks like a calendar with a padlock symbol). Choose Exit Spybot S&D Resident
2. Run Spybot S&D
3. Go to the Mode MENU, and make sure ADVANCED Mode is selected.
4. On the left HAND side, choose Tools > Resident
uncheck Resident TeaTimer and OK any prompt and Restart your computer.

Note: If TeaTimer gives you a warning afterwards that some changes were made, allow this instead of blocking it.In your post (sub: read this before requesting malware removal help) in this board, you advice:
"You should only have one antivirus and one firewall active at any time".But in my computer there are two firewall active."Zone alarm firewall" and "windows firewall".Can I turn off "windows firewall"?Yes you should turn off the Windows Firewall.which firewall is more effective?"Zone alarm" / "windows firewall" or other?Zone Alarm is a good firewall.Thank you. My last question:
I have changed the superantispyware's setting. In "scanning control tab" only three following "scanner options" are checked:
1. Close browsers before scanning.
2. Scan for tracking cookies.
3. Terminate memory threats before quarantining.
Other options are unchecked. Is it the correct selection? If you are using the free version.

Click the Preferences button.

* Under Start-Up Options uncheck Start SUPERAntiSpyware when Windows starts