Delete Grub and OpenSuse but keep Windows 7

I have OpenSuse installed alongside Windows 7.
Grub is the boot loader from where I access OpenSuse and Windows 7.

I want to delete Grub and also the OpenSuse partitions.

My first, failed, approach was to insert the Win7 DVD, choose Repair your computer and then enter the commmand prompt.
I then typed "bootrec /fixmbr" and restarted.
It didn't worked. Grub was still there, so was Windows7.
I then tried using "bootrec /fixboot and /rebuildbcd and neither worked.

So what can I do to fix this?
I remember when I was using WinXP this was much simpler. I would just type fixmbr and that was it.

Any clues?

Answer

OK I managed to solve my problem.

I chose to repair my computer, then chose to let Windows to it all automatically. By choosing the first option.
It worked. Strangely it didn't work before when using bootrec tool when it should. Thanks anyway. :)