"The system cannot find the file specified." when invoking method ~HTTP Get/Post

[C Jones]

Developed and successfully tested my web service on a
development server with .asmx mapped to v1.0.3705
\aspnet_isapi.dll, but when I migrated it our other server
I get "The system cannot find the file specified." when
invoking method via HTTP Get/Post. Havent tried SOAP yet.

The other server has its .asmx extension mapped to
v1.1.4322\aspnet_isapi.dll

So far I have tried without success:
1. to give the aspnet user access to all temp directories
(read this somewhere)
2. changed the .asmx extension mapping to v1.0.3705
\aspnet_isapi.dll

It seems as though the method reference is not getting
piped to the .asmx file (??)
re: http://server/app/service.asmx/method_reference

Any help or insight in resolving this would be greatly
appreciated.

Thanks