Available Web Server (IIS) Role Services in IIS 7.5

Handy post of features and what versions / modules are available on Windows.

http://technet.microsoft.com/en-us/library/cc753473.aspx

SMTP Email on Windows Server 2008 R2 configuration

http://technet.microsoft.com/en-us/library/cc753146(WS.10).aspx 

Steve Schofield
Microsoft MVP - IIS