I bought a Lenovo ThinkCentre that came with (UGH) Win 7 loaded and 2 XP disks. No where in any pamplet they sent does int say How to put WIN XP(Hooray) on this thing. I put the Win XP disk in the DVD Drive and booter the Computer but notjing Happens. Can anyone tell me how to unravel this mstery ?The unit looks great but I can't use WIN 7.!!