Vista - How to UNassociate a file extension?

I stupidly reassociated the *.lnk extension with Internet Explorer. Now,
I'm really in a mess. My Start menu programs no longer work. I can't find
the .exe file to run Outlook, etc. etc. etc.

I've gone to control panel, but all it allows is to CHANGE the association;
It doesn't allow me to DELETE the association. And <none> is not given as
an option. What can I do, short of reformatting my Hard drive and starting
from scratch?

--run.reg--
Windows Registry Editor Version 5.00

[HKEY_CLASSES_ROOT\.lnk\ShellEx]

[HKEY_CLASSES_ROOT\.lnk\ShellEx\{000214EE-0000-0000-C000-000000000046}]
@="{00021401-0000-0000-C000-000000000046}"

[HKEY_CLASSES_ROOT\.lnk\ShellEx\{000214F9-0000-0000-C000-000000000046}]
@="{00021401-0000-0000-C000-000000000046}"

[HKEY_CLASSES_ROOT\.lnk\ShellEx\{00021500-0000-0000-C000-000000000046}]
@="{00021401-0000-0000-C000-000000000046}"

[HKEY_CLASSES_ROOT\.lnk\ShellEx\{BB2E617C-0920-11d1-9A0B-00C04FC2D6C1}]
@="{00021401-0000-0000-C000-000000000046}"
--end file--

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Mark L. Ferguson
..

"Joe" <avoidspam1@xxxxxx> wrote in message
news:56B3D7CC-7A1E-4A90-BABF-D118EBC7D225@xxxxxx

Hi Joe,

Run the .LNK association fix from here.

File association fixes for Windows Vista:
http://www.winhelponline.com/article...ows-Vista.html

--
Regards,

Ramesh Srinivasan, Microsoft MVP [Windows Shell/User]
The Winhelponline Blog: http://www.winhelponline.com/blog
Windows® Troubleshooting: http://www.winhelponline.com

"Joe" <avoidspam1@xxxxxx> wrote in message news:56B3D7CC-7A1E-4A90-BABF-D118EBC7D225@xxxxxx
I stupidly reassociated the *.lnk extension with Internet Explorer. Now,
I'm really in a mess. My Start menu programs no longer work. I can't find
the .exe file to run Outlook, etc. etc. etc.

I've gone to control panel, but all it allows is to CHANGE the association;
It doesn't allow me to DELETE the association. And <none> is not given as
an option. What can I do, short of reformatting my Hard drive and starting
from scratch?