Web Service Deployment - Consumption Problem

[webmaster]

I developed a Web Service locally:
http://localhost/wsColman/portal.asmx.

I consume this web service locally using an ASP.net web application via
the Web Reference proxy.

On my Win2K machine the consumption works great. When I migrated the
wsColman web service to my Win2003 Web Server (Production) the web
service works fine, but the consumption fails in the ASP.net web
application. Why?

I've tried to use the VS 2003 setup project to install on the
production server but still fails.

I've even tried to regsvr32 the wsColman.dll. No luck.

Any ideas would be appreciated.

Thanks in advance,

Tom