I would recommend that you get gparted. download the iso and create a livecd from that. Then boot into that and see where all that space is. It might just be unpartitioned space. If so you can add it back in your vista partition with gparted and you will be all set.
To create the livecd. I would recommend imgburn as a program to use. It is free as far as I know.
Cheers!
To create the livecd. I would recommend imgburn as a program to use. It is free as far as I know.
Cheers!