Windows On Usb Flash Drive

Hello,

Hi guess im posting my question To see if maybe u can help me. I Want to install Windows XP in my USB Flash Drive and no i don't want to put it in to boot and install windows in other computers i want it to be my OS System When i put my Windows Cd in it goes and finds my Hard Drive And Usb Drive I click on Usb Drive to Create partion or install Windows and i get Blue screen" This is not a Primary Drive Cannot install becuase its a remobable media i Just wanted to see if u guys have any Ideas How to bypass this or if theres soft to make my usb look like and internal drive Thanks if u read this Im expection a solution bye .....