How to prevent VS2008 from converting version project?

My System:
Vista
Visual Studio 2008

Steps I took:
1 - create a new project > outlook 2003 Add-in
2 - add a MessageBox.Show("test") in the Add-in
3 - Save and install the Add-in --- sure enough it works.
3 - Save and close the solution
4 - Reopen the solution in Visual Studio 2008

When I open the solution i get the "Welcome to the Visual Studio Conversation Wizard". it tells me that "The project or solution was created on a previous version and that I must convert"

When I convert, My Add-in fails to load and gives me an error : "The customization assembly associated with this document could not be loaded. The application manifest might be corrupted. You can still edit and save the document. Contact your administrator or the author of this document for further assistance".

My Question is: How do I stop Visual Studio from converting my project which was originally working?

Solution: How to prevent VS2008 from converting version project?

Someone venting on the conversion wizard. Seems like there's no utility to disable it.

http://saftsack.fs.uni-bayreuth.de/~dun3/archives/i-hate-and-loath-the-visual-studio-conversion-wizard/127.html

I just came across this. Not sure how helpful it would be:

http://www.msdner.net/asp.net-archived/95/35-1012-955476.shtm