Hi,
After so many hours of spending on this I found the solution
When we wrote Custom http handlers in IIS 7.0 must be write under
<system.webserver>
<handlers>
<add name="MyCustomHandler" type="MyCustomHandler.type" verb="*" resourcetype="unspecified" />
</handlers>
</system.webserver>
not in
<system.web>
<httphandlers>
<add ...="">
</add></httphandlers>
</system.web>
I hope this will help ur future developments
Thanks
Sabbi