i am having this big problme, whenever i open any folder it closes automatically, even if i try to open mcafee 8.0 it too closes :S, is this causing by a virus? please help.

moiz1, Is it just folders and McAfee or is it all programs? You could try the "Folder Association Fix" and the "EXE File Association Fix" at the link below.

http://www.dougknox.com/xp/file_ass...

The problem may be related to a virus, trojan or malware.

Tufenuf

Thanks Tufenuf for the link i'll try it after getting back to home, b/w problem exist in all the folder on my HDD, i only run macfee afterwards so dont know if it exist with other exe files too.

Sounds like a virus to me. Make sure your anti-virus is upto date. I would also boot into safe mode and run your anti virus software there. When the computer first boots up keep pressing F8 then select safe mode. Log into safe mode and run your antivirus software.

http://www.windowvistarepair.com offering free computer support

Download and install Avast Home Edition v4.7, update, scan, remove. Anything that can't be deleted the first time, tell it to remove it upon the following reboot.
Download and install Ad-Aware SE and Spybot S&D, update them, scan for spyware, remove all.
Use CCleaner to clean out the temp/cache on your PC.
If you have any Norton products installed, use the Symantec Norton Removal Tool 2007 to remove it from your PC. It is garbage.
Use JKDefrag v3.7 to defragment your HDD(s).
Use jv16 PowerTools 2006's Registry Cleaner on Aggressive Mode to scan, fix and remove invalid registry entries. Then use the Registry Compactor feature to defragment your registry. Reboot.

After this, your system should be a lot smoother and faster.

i ran Mcafee from safe mode but it didnt detech any virus :(, its up to date. and later when i rebooted in normal mode problem was still there, anyways i give up then, i formatted my HDD and installed fresh copy of windows :(.

Thank you all for helping me anyway, jeremyofmany thanks for the software names, as i was thinking of not installing mcafee as it is useless :(