First.. if this was little me doing it, I'd run a proggie like Partition Magic over the drive, as I don't really trust fdisk.
Seond, to make the drive letter appear in XP..
right click on My Computer
click on Manage
...
this will give you the whole MMC thingy, which ya only need the disk managment set for.
click on the drive that doesn't have a letter, and click on "assign drive letter".
Hope that helps and/or answers questions, post back if so or not.
