In IIS7 (atleast till RC0 release), you might find no UI way to restart IIS services (IISAdmin, WAS, W3SVC). Only way is by using the command line exe - the classic IISRESET.
Here is my UI module which give you a UI way to do this. This also shows the status of each IIS service running. Below is how it looks:
Here is the link for the DLL:
To add this module in your IIS 7 manager follow the below steps:
<add name="IIS7IISRESETUI" type="IIS7IISRESETUI.MyModuleProvider, IIS7IISRESETUI, Version=1.0.0.0, Culture=neutral, PublicKeyToken=db9daa3d2ea5f6fd" />
<add name="IIS7IISRESETUI" />
Let me know if this helps you!
UPDATE : This is now in iis.net/downloads. Check this out.