I have no personal experience in doing this, but I always heard that installing Windows 2000 or any other older Windows OS after XP will damage the bootsector and will prevent XP from starting. Does this not apply if ME is already installed?
Well the issue is that MS designs their OS's so that older ones will see there is a newer version and won't install after the newer version. Older OS's need to be installed first, and dos based OS's need to be install first in the root of the boot drive. Of course, third party utilities such as Partition Magic (actually Boot Magic) provide a way around this.
In this case, however, the DOS OS is already installed in C: root so I believe he can perform the upgrade. It's an excellent question though yoyo.
Ep, glad to see you come back and tidy up...did want to ask a one day favor, I want to enhance my resume , was hoping you could make me administrator for a day, if so, take me right off since I won't be here to do anything, and don't know the slightest about the board, but it would be nice putting "served administrator osnn", if can do, THANKS