IIS 7 and Above
How to install ASP.NET user account
Last post Sep 01, 2010 10:44 AM by lextm
Aug 31, 2010 11:53 AM|hesspos|LINK
Sep 01, 2010 10:44 AM|lextm|LINK
The correct forum to ask is http://forums.asp.net and obviously the answer is "that account is no longer used, so forget about it".
Please read about IIS 6 and IIS 7 to master all changes happen after IIS 5.x. Then you will see why that account is no longer used.