file extesions all changed to .lnk

All my shortcut extesions have been changed to .lnk and I can't open anything.Can't get going in safe mode. can't run ms config. Ran Kaspersky and no viruses. Can't run spyware programs. I saw your solution to this for someone else but couldn't make it work
Any ideas?
Jan
jandelliottAsked:
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amirinamdarCommented:
I think you should boot in 'safe mode' and then run all the spyware tools/antivirus tools. Experts on this site have compiled  useful resources on this matter. it is worth checking out. Look at this link:
http://www.experts-exchange.com/Q_20975384.html

Specifically, run:
Spybot S&D
Ad-Aware
CWShredder
HijackThis
[analyse at www.hijackthis.de]

An there is a previous answer [i don't know whether you are specifically referring to this when you say that you saw solution for someone else] http://www.experts-exchange.com/Operating_Systems/WinXP/Q_21131274.html
Might help.

This link would fix most of the extensions:
http://www.dougknox.com/xp/file_assoc.htm

BUt, I would still suggest to take the security measures above.
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