ATL Server Web Service on Windows Vista and VS2005

[BitSniffer]

Hi There !!!
Let's find someone who could help me on this problem.

I have created on VS2005 under Windows Vista a new Visual C++ ATL Server Web Service Project with:
Blob Cache
Session Services (Memory-backed session-state service)
I compiled the project sucessfully. Then, i opened IExplorer and access de URL to generate the WSDL.
The WSDL of the web service was generated with sucsess.

This is my problem:
With this simple and basic project, i changed the configuration properties to support Common Language Runtime Suport, Old Syntax (/clr:oldSyntax)
The compilation of the project was made successfully.
The problem was when i go to access the web service to generate via web browser the WSDL.
I access the URL (something like: http://localhost/ATLWS1/ATLWS1.dll?Handler=GenATLWS1WSDL) on IExplorer, and the web browser hangs and no result is returned. Just a page indicating that "Internet Explorer cannot display the webpage".

There some dependency or configuration missing to support CLR ?? I tried the same scenario on Windows XP and this works fine.