NO ADMINISTRATIVE RIGHTS

Hello, I am the administrator on my own laptop. When I shut down my computer on July 5, it was working beautifully. When I started it on July 7, I couldn't type into the screen in Explorer 8 - I could only type into the address bar or use favorites. I was dead in the water until I switched to Firefox. When I later noticed that everything was VERY slow, I went to Windows Search, only to discover I couldn't type there, either. A few more attempts to find a solution resulted in getting the message that I needed an administrator to perform the task. When I went to Users, it said I was the Administrator, but won't let me do anything with the accounts. I can access all of my documents and photos, but have NO System Restore points or privileges. Does anyone know what is wrong and how I fix this - in simple terms, please?



<config>Windows XP / Firefox 3.5.11</tconfig>