Is it possible to repair a windows xp on a domain with a power user ?

I am working in a company. I am a power user and my usb port only for removable storage is access dinaied.The type of my hard drives is NTFS. I do not have my local admin password. i am really limited. So i am looking to find a solution to: 1-reach local admin password. 2-open my usb port for removable storage such as flash or external hard disk. if i repair my windows xp is it possible to do that without inform to our admin? Is here any body to help me? Please do not forget i tried a lot of solutions without result. safe mode bootable reset admin password CD and …..