won't a windoz install trash grub?

Hi Folks,

running 11.2 and lovin it
I have come up with a copy of Win7 and want to install it so I can duel boot and play with it. Won’t installing it after having 11.2 installed overwrite my grub installation?
How can I recover from this?

TIA
Dave

Yes it will.
Create some room for it by leaving a partition unformatted install it without touching openSUSEs own partitions.
Insert openSUSE DVD and boot from it - Go with the ‘repair’ option and let it fix grub.