Duck2008, From reading this tutorial it would seem that one (the) reason grub didn't work is because I am using NTFS not FAT32 on the Windows drive. That's interesting.

On recommendation in tutorial suggested by Duck2008 above I ran chkdsk /r on the Windows drive. It found and fixed some errors. I then booted using the grub syntax provided by Junior Hacker above and it worked. All I need to do now is make these changes permanent and the problem should be solved.

Thanks.