Problems after Complete PC-Restore

Hi!

Recentely the internal HDD of my Dell Vostro 1500 crashed.
I was able to perform a Complete PC-Restore back-up via Windows Vista Business.

I got a new internal HDD: a Hitachi's 7K500 250GB to replace my old crashed Seagate 5400 rpm 160GB HDD.

Luckely I got al my files and programs back via Vista's Complete PC-Restore.

But now I noticed a problem...
Windows does see that I have a new internal HDD, as it is in the hardware list, but when I go to "My computer" and take a look at the size of my "C"-disk (OS), it looks that Windows still thinks that I'm using the old 160GB HDD. Because it still gives the same amount of diskspace as with my 160GB HDD, and not the amount that it should give for a 250GB HDD.

When looking in the BIOS, I see that the computer does know that it is a 250GB HDD.

I think that, due to the Complete PC-Restore, Windows thinks that it's still running on a 160GB HDD... But on the other hand, why does it says in the hardware list that it sees the new Hitachi HDD?

So... what can I do about it?
How can I make my C-disk "show itself" as a 250GB disk and not as a 160GB disk?

Regards,

Jurgen