I have a PC that has not yet joined the domain, so contains only Local Users. I would like to join the domain but have it use the settings contained in the local profile because once I join it creates Users\Username.server which is NOT the same as what's in the Users\username account.

So I'm thinking there must be someway to upload my customized Local account to the server so that it may use that as a template for creating the domain account and any future domain accounts?

I believe you can just copy your profile info to:

%SYSTEMDRIVE%\Documents and Settings\Default User

Then when it makes a new profile, it should pull the data from the 'Default User' profile.