Stephen,

>c:\inetpub\wwwroot\ParkerWS\Service1.asmx.cs(23): 'ParkerWS.Service1' does not contain a definition for 'RegisterBizObj'

Yes, you can use business objects in a Web Service without a hitch...I recommend checking your business objects for a call to a "RegisterBizObj" method...this method call is not performed at the MM .NET level, and shouldn't be performed from within the business object at all because it creates a dependency on the host environment--and in this case the Web Service does not have this method.

Regards,