XP cannot download or run malicious programs says "windows cannot regonize this file."

I was uninstalling malicious software looking for my computer and I inadvertently all my icons turned into Notepad files during the process.  Also, I can't access the start menu programs (Spybot, symantec, etc.) because the start menu programs also open in Notepad.   I have looked on the net and couldn't get anything to work.  I can't even download anything because it comes up with the "windows cannot open this file...". ', it is ususally a .exe file problem.

I tried to copy and paste the rundll32, but he did nothing.  I am troubled by this because it worked very well.

Thanks for the help

Mark

Hello

· What is the complete error message you receive when you try to download?

Follow the steps in the links: how to change or choose the program that starts when you double-click a file in Windows XP: http://support.microsoft.com/kb/307859

Cannot open files with extensions such as.exe, .com, and.lnk on a Windows XP computer: http://support.microsoft.com/kb/923077

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