Broadband

I have read similar posts but anything suggested in them didn't work for me. I loaded Mandrake 10 on a new PC a while back. I now want to run windows on it but try as I might, I can rid the hard drive of the MBR. I have tried fdisk /mbr and the Maxtor Maxblast tools. I have also tried something called CasperXP which clones drives. Whatever I do, I end up with the same problem. I start to load XP but when the machine reboots, it gives a 'can't load operating system' or similar error. I gave up a while ago and reloaded Mandrake 10, which works fine. The half loaded windows is still there but didn't boot using the option in lilo. I got smart and tried to copy another XP hard drive on an identical system but when I try to boot into windows, it still sits at a flashing dos prompt. Ideally I would like to keep the dual boot but I don't know how to load windows with an existing linux load. Otherwise, I would also be happy to delete linux and get windows on the machine. Thanks in advance for any help.