The host dude launched it to work in IIS 7. HTTP handlers require mapping to other application pools in order for it to work in IIS 7. I hope this helps.
Make sure you have the following in Web.Config :
<system.webServer>
<validation validateIntegratedModeConfiguration="false"/>
<handlers>
<add name="wildcard" path="*" verb="*" modules="IsapiModule" scriptProcessor="%windir%\Microsoft.NET\Framework\v2.0.50727\aspnet_isapi.dll" resourceType="Unspecified" requireAccess="None" preCondition="classicMode,runtimeVersionv2.0,bitness32" />
</handlers>
</system.webServer>
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