SharePoint deleted my default website. If you got in the same boat here are some ways back. It will not do it all for you but if you catch it quick enough you can save yourself some time rebuilding.
Default website was deleted
Recreate Virtual IIS directories for exchange http://msmvps.com/blogs/kwsupport/archive/2004/10/02/14723.aspxIf you have any tips, tricks resources you would like shared with other sharepoint developers please email them to Susan Fischer at firstname.lastname@example.org and we will make sure they are posted.