Operating System: windows xp

hey guys, i was playing around in the command prompt of my computer and started playing with the net user command and found the user support_388945a0 and saw how it was used by microsoft and was wondering, is there anyway that i can use this account to log on to my computer in case i lost my password or any other circumstances. just a fun thought that crossed my mind, i tried to login by disableing the easy login of windows xp (so it looks more like windows 2000) so that i can attempt to logon as it (yes i did successfully set it to active, and change the password and all other needs to make it a user, and yes i did set it back to the way it was after i was done playing with it just in case) but it didn't want me to logon as it saying i can't logon as that user (wasn't a incorrect password, was a different error, i will post it later i have to refresh my memory of it's exact wording.)

so what do you guys think, possible or not?