Try this:
https://sites.google.com/site/easylinuxtipsproject/grub#TOC-Restore-Grub-the-Win\
dows-CD-has-overwritten-Grub-

I will book mark this as I seem to need to reload my windows partition
quite often for various reasons.

Long before this I was faced with a booting problem and discovered
boot-repair-disk. It's free and fixes every situation I've ever encountered
perfectly. It claims to do it in one click but worst case situation is that
it takes multiple clicks through reasonably clear menus.

Just search for boot repair disk.

Thank you, I am downloading it now and will keep it close.

It has saved my bacon many times, and very quickly too.