I recently installed a third party control and it had an option to add the control to my Visual Studio toolbox. When it installed the control to my toolbox, I noticed that the "Open / Create Website" option on the Start Page was missing. I tried everything from repairing the install to uninstalling and installing VS 2008 all over again. Nothing worked, but then a saw a comment on resetting the VS settings.
For some, it may not be an option but I had only a few custom settings which I could change again.
This is what I did and it worked:
1. Start VS IDE.
2. Tools -> Import and Export Settings
3. Select "Reset all settings", click Next
4. If you want to save the settings, go ahead, I did not save them. Then click Next
5. Select "Web Development Settings" and click Finish.
You should now get the Website option on your start page.