A web site that a client has to use has a "secure" area. The web site they log into is running IIS and has a password pop up. It's running that weird domain integrated authentication so nothing other ...

IIS6 always runs as network service. If you want IIS to run as LocalSystem like in IIS5 you have to change IIS to run in IIS5 Compatibility Mode. If you need to authenticate as someone else, you can ...