Boot Sector

Orginally, I had ME installed and then put another HD with XP on it. Later, it became necessary to reinstall ME. I noticed from the beginning that a folder was created in ME named WINNT. Looking thru it I guessed it to be boot files. After reinstalling ME I booted up and no XP just ME. Went to Windows Explorer and the NT folder was gone but XP files and programs were there.Is there a way of creating this folder short of reinstall?