I'm interested in setting up a full-blown local user to run my ASP.NET web sites under in IIS 7.5 (Windows Server 2008 R2).
(The long and boring rationale has to do with System.IO.Packaging's use of Isolated Storage. Running the offending code under another AppDomain using MarshalByRef or serialization isn't really an option.)
I've always used the user defaults for IIS (AppPoolIdentity, Network Service, IUSR, etc.), so I'm looking for advice in how to properly set up a regular user for IIS.
What pitfalls should I look out for, especially around permissions and security?