Converting EXT3 to NTFS Under Windows 7 ?

I am pretty sure I asked this question a few years back and got a solution here.... but I have lost all of my saved subscriptions in the change to the new forum format.... so here goes again....

I just retired a 3 TB drive from my Ultra-6 and now I want to use it on my Windows 7 PC - formatted as NTFS.

Did what seemed like the obvious:

• MyComputer | Manage | Disk Management
  
  
• Selected the EXT3 drive
  
  
• Deleted existing partitions
  
  

But that left me with only 746.52 gigs available - instead of 3 TB.

I formatted that to NTFS anyhow - just hoping that Windows would see the problem and fix it on-the-fly.

But somebody, somewhere in WIndows 7 threw a Warning dialog:

"The detected total capacity (746 GB) of the drive Disk #7: Hitachi....
is not correct the capacity should be 2794 GB....."

On a WIndows command line, I tried CONVERT G: /fs:ntfs, but CONVERT said that
the disk was already NTFS (true, but only 746 gigs...).

Deleted the partition and, of course, the drive letter went away so there was no
drive letter to feed to CONVERT.

Seems like the last time I was here the solution was something with the WIndows 
FORMAT command. Tried Googling and wound up with many hits - but all from a
Linux perspective.

Can anybody shed some light?