The Stealthinator :
How did your friend install ubuntu for you?
If you don't have any important data on that partition, I suggest formatting it and installing Ubuntu through a utility called wubi.
You can get it from Ubuntu.com. It worked really well for me. You just have to select the second partition you want to install it to and it does everything including creating options in the boot menu.
Same problem is faced by me !! can someone help me please ,as I am not tech savvy ,I wish if you can give me a step by step process thanks , plus when I tried to run a recovery dvd of windows 7 ..only black screen appears written grub rescue,second thing is it I need to go in boot option and then need to further proceed ??
Please help me !! I need your advice !!
Thanks