When I installed Windows XP Pro on my Dell, I already had Windows ME, so I just selected to upgrade. But, a few weeks later, I wanted to format my HD. So, I had a formatted HD. I used a boot disk to access DOS, and then I put in the Windows XP CD, and I tried to run setup. it said something like "This program cannot run in MS-DOS mode". So, I just installed Windows ME and then did an upgrade on top of Win ME.

How do you install WinXP while in DOS on a formatted HD?