Messed up Windows Folders

[garcia]

I changed my windows xp "folder" icon and seemed to have messed up my system. ops:

Now everytime I click on a folder it opens up the search function.

In Control Panel -> Folder Options -> File Types, for the type "File Folder" I am stuck with a default of "search".

Anyone know how I can fix this???
Any help much appreciated,

Garcia.

[Steve]

System restore?