I know this has been posted before but I can't find the right threads.
I have 100 GB spare on my disk and need Windows for some programs I have to run for my studies. I could buy a second disk but well, got enough spare on this one so why bother.
Is it possible to install Windows to a newly created NTFS partition without screwing the Grub bootloader? I know the other way around is easier (win first, linux afterwards) but well, Linux is running fine and don't want to do it over again for Windows?

Any good suggestions (could be an old thread aswell if you can find it)

Regards

No, windows in most cases will overwrite the MBR most likely. And no, you don't have to reinstall Linux. Install Windows and boot with a rescue cd or the like and rewrite grub or lilo to the MBR.