ADMINISTRATOR PRIVILEGES

Question

I AM USING A 4GB VERBATIM PEN DRIVE... I M LOGGING ONTO MY COMPUTER AS THE ADMIN.... BUT WHEN I TRY TO FORMAT THE DRIVE OR WHEN I TRY TO DELETE ANY INFORMATION, IT ASKS ME TO LOG IN AS AN ADMINISTRATOR... WHEN I TRY TO FORMAT IT UNDER DISK MANAGEMENT, IT SAYS I DONT HAVE SUFFICIENT PRIVILEGES AND M SUPPOSSED TO LOGIN AS AN ADMIN OF THE COMP...
ANY SOLUTIONS????????