lol noooo... why do THAT? just log into the Administrator (if u have xp professional, then just hit Alt + Ctrl + Del TWICE at the logon screen - type in Administrator in the user name form and the password to the account respectively) - so if u have home, then boot in safe mode >> logon to Admin account.
go to the Control Panel and then to User Accounts, select your account, go to 'change the account type', and select computer administrator
Reboot. this will now make it so YOUR account has administrative privileges and u dont have to always log on to some other account to access something.
need any further help, just ask