Well heres the trick which can use to prove that Windows XP is not at all defended as multi-user operating system. Some tips and trick for system registry from any account to having access the system registry puts you in to the administrator account. This is what you have to do:
Click on start>run(win key+r)
Then tpye [...]

Deep central the belly of Windows Vista, there’s a abstruse Ambassador account, and it’s altered from the accustomed ambassador annual you a lot of acceptable accept set up on your PC. This Ambassador annual is not allotment of the Ambassador group. (Confused yet? You should be.) It’s a affectionate of superadministrator, affiliated to the basis [...]