Log in to the "Administrator" account which Windows created -- this should give you full access. You can get the Administrator account to become visible at the login screen by starting in "safe mode" (usually it's hold down F8 until the 'Advanced Startup Options' appears). Safe Mode is among those options. Then you'll get a log-in screen showing a button for the "Administrator" account which is normally hidden.
However, for better security against malware you should log-off that account as soon as possible, then log-on to your own account in 'Normal' mode again. Only use the Windows "Administrator" account temporarily to change any settings which are otherwise 'locked'. Never use it as an everyday account, because if you have access to all the settings and configurations, so does malware.
Edited by pip22, 02 November 2007 - 01:08 PM.