Several Gruntzerz have been able to play Gruntz on WIndows 7 ... the only problem there is that the installer does not work on a 64-bit computer. You must do the installation manually, via Windows Explorer (drag and drop). Then follow the directions you will find in this Forum in the Gruntz General Board. On this Forum you will also find the Version 1.01 patch, screen resolution patches ... and the Gruntz Level Editor. The 'Help' menu item within Gruntz no longer works (thank you, Microsoft ) but also available here is an updated manual for the Gruntz Level Editor in HTML, with links in important places to more fully explain what should be filled in into fields when creating puzzles.
And there are several Designers frequenting this Forum to help you out with designing problems ... and even more people to help with solving puzzlez!