NTFS drive, Windows 2000 and "Write Signature"

A researcher gave me a 320 GB SATA drive from a Windows XP machine that
he wants to have access to. I put it in a Windows 2000 machine and in
"Disk Management" it shows up as "Unknown". The only option appears to
be "Write Signature". Could doing this be a bad thing as far as being
able to access the data on the disk?

I have used "FinalData Enterprise" to see if there is data on the drive
and it finds two NTFS partitions with data. All looks fine. I can use
this to get the data now but it would obviously be better to have it
accessible the normal way. I just don't want to write the "Signature"
and then find that I can't even get the data via Final Data. I doubt if
this would happen but I'm not up on Windows so I'd like some advice.

As far as I can tell from what searching I've done, the Write Signature
command just deals with the MBR. It is also used to go to a Dynamic
Drive which I don't want to do. Would doing a fdisk /MBR be better?

Bottom line: what is the procedure I should use to safely mount these
partitions on this Win2K machine?

Thanks for your help.

Steve