Clone - Missing Grub2 - Ubuntu10.10 and WIN 7 -

Hello,
Created an image of a Ubuntu 10.0. and Win 7:

with Acronic True Workstation -

Grub needs to be reloaded from the LIVE CD

1 mbr1 boot 102 nfts/hpfs
1 mbr2 8330m nfts/hpfs
1 mbr3 28885m unknown
1 mbr4 Prime

Working with the Desktop Live CD -

I have the information but not sure how to apply it;

I tried to install GRUB2 :
sudo grub-install --force --root-directory=/mnt /dev/sda3

Does not work - where does reinstalling the MBR come in ?

Thanks,
Stephen