My problem is - I CAN'T change back MY USER ACCOUNT from 'STANDARD USER to an 'ADMINISTRATOR'. Now, my account is a 'standard user', and i was UNable to change back MY ACCOUNT to an 'administrator' at the user account .When i try to change 'ASP.NET Machine account' account type,i was UNable to change it to 'Standard User' the note given i ''must assign another user on this computer to has an administrator account before you can change this account type''.how i can do that?.Next,at my user account,i click at the change account type, after that,i choose 'administrator' but it still as a 'standard user', it was UNable to change back my account to 'Administrator'. Only 3 account at this computer.1.My account now as a 'standard user' where are the first account as administrator at this computer,2. the ASP.NET as an 'administrator' when i accidentally change my user account type to 'standard user' and it automatically changed the ASP.NET as an administrator at this computer,the last account is Guest, the Guest account is Off, Only me use this computer. I was ACCIDENTALLY change my user account from 'ADMINISTRATOR' to 'STANDARD USER',after that, ASP.NET Machine account AUTOMATICALLY changed as an administrator at my computer, and now i CANNOT change back my account to 'ADMINISTRATOR', i want to change back my user account from 'standard user' to an 'administrator account'. Can you tell me how to CHANGE BACK my user account to ADMINISTRATOR ? Please . . . .