cannot uninstall SharePoint Server 2007

I have installed SharePoint Server 2007 Entrprise. And I want to uninstall it. But each time I select to uninstall it, and at the beginning of the uninstall process (i.e. of the progress bar of uninstall process), the uninstall dialog will suddenly be terminated/disappeared (without any error message). From control panel, I can see the “Size” of installed SharePoint Server 2007 Entrprise is not available (seems very weird). I can also execute the SharePoint Central Administration from start menu — so seems some SharePoint function still there in my machine?

Any ideas what is wrong and any solutions? Here is a screen snapshot of installed programs (with detailed information) of my control panel.

http://i36.tinypic.com/2wdycjs.png

BTW: I am using Server 2008 x64 with SharePoint Server 2007 x64. The SharePoint Server 2007 Server x64 is trial edition (trial period expired) and it is why I want to uninstall it.

thanks in advance,
George

You have to do a few things before you can run the uninstall. Here is the list:

http://www.keirgordon.com/post/Uninstall-MOSS-2007.aspx

Check more discussion of this question.

Related posts:

1. SharePoint 2007 licensing question
2. Trying To Uninstall Exchange 2007 From Server – Stuck On “Mailbox Role Checks”
3. How do I migrate a Task List from SharePoint 2007 to SharePoint 2010?
4. SharePoint 2007 to SharePoint 2010 Migration Plans
5. Problem with “Open in Windows Explorer” on SharePoint 2007