my game wont update in windows 7 ultimate

[tkfmmaxi]

Hi all i,m sorry if his is a stupid question so for give me before i ask!.
Ok here goes..i bought Cliffs of Dover and so far have had not much luck getting the game to run ..so i thought ok i,ll install 1946 arghhh big mistake i have now been trying to install run and update for 5 hours!.
I am now trying to install the mega patch 4.10.1 but for some reason every time i check the game i,m still on the retail v7 version can anyone give me a guiding hand with this problem?
Ps i had no problems at all updating on my old rig which was XP proff.
If my dx diag would be any use i will gladly put it on the thread

Thanks for your time guys and gals