Deleted NST folder - cannot boot into BT3

[SimpLe-SI]

Hi.
I'm currently dual booting with Vista and BT3 using grub. Other day I deleted the 'NST' folder in my Vista c:\

MBR looks like this for the BT3 bootup portion:

Entry 3
----------------------------------------------------------------------------
Name: BACKTRACK 3
BCD ID: {d9d43170-6007-11dd-8b43-8943620ecd66}
Boot Drive: C:
System Bootloader: \NST\nst_grub-5F6A92CF71032E4FDDA8EB8D0E76CEC9.mbr

could someone please help me as i need to add some folder/file to my c:\ for BT3 to bootup now. Ive tried readding the entry but its not working. what exactly did the nst_grub-5F6A92CF71032E4FDDA8EB8D0E76CEC9.mbr file contain?
thanks

[SimpLe-SI]

problem solved.
when I created the entry EasyBCD would create a new NST folder in the c:\program files\easycbd\boot\nst
I just created a new entry, copied that folder to c:\ and renamed the file to nst_grub-5F6A92CF71032E4FDDA8EB8D0E76CEC9.mbr and it worked