See also: Other Geeks@INDC
asp.net 3.5 has already supported routing.
if you need great flexibility on how your url should pass to a handler
Url rewriting intercept when beginrequest, so early in the morning.
but routing is on resolve cache.
When you double click the all task in teamexplorer, pop up above error
Reinstalling VSTS SP1 does solve the problem
<add name="whateveriputithere" verb="*" path="*.something" type="[namescpace.classname],[YourCompiledAssemblyName.dll]" ResourceType="Unspecified">
ResourceType equals to iis6 verfy file exist option
"Unspecified" means unchecked