Just a reference to my me as I have forgotten it too many times ;-)
http://blogs.technet.com/seanearp/archive/2008/07/01/installing-sql-server-2005-on-windows-server-2008.aspx and http://support.microsoft.com/kb/920201
If you want to install SQL bits, including reporting services you need some IIS 7.0 components that maybe missing if you just all the web server role.
| Component | Folder |
|---|---|
| Static Content | Common HTTP Features |
| Default Document | Common HTTP Features |
| HTTP Redirection | Common HTTP Features |
| Directory Browsing | Common HTTP Features |
| ASP.Net | Application Development |
| ISAPI Extension | Application Development |
| ISAPI Filters | Application Development |
| Windows Authentication | Security |
| IIS Metabase | Management Tools |
| IIS 6 WMI | Management Tools |
flaphead.com 