UnauthorizedAccessException loading ActiveX control from Web Service

[Marni]

I have a question on invoking processes from within a Web
service. I have an ActiveX control that actually runs as
a process (Bartender.exe). When I try to load this
control I get an UnauthorizedAccessException as shown
below.

System.Web.Services.Protocols.SoapException:
System.Web.Services.Protocols.SoapException: Server was
unable to process request. --->
System.UnauthorizedAccessException: Access is denied.

My Web service is running under the local ASPNET
account. I even tried giving ASPNET superuser priviliges
as a test, but that didn't make any difference.

Any ideas?

Thanks,
Marni