Linux/Windows dualboot machine with Linux first?

I have SUSE 9.3 Installed on a 19GB partition of a 40GB hard drive. I heard that it is possible to dual boot with Windows with Linux being the first installed OS, but it's complicated. Can anyone tell me if I can pull this off without having to make Windows the first installed OS? Here is how I have my partitions:
hda1=1GB [swap]
hda2=17.8 / [root]

The easiest way: Make hda1 bigger and install Windows there.

You will have to restore GRUB later using the SuSE CD and also create the GRUB menu entry for WIndows..