Would just like to share my experience. I have bought several Cherry keyboards and discovered one problem with them. If you buy cheap (aka on ebay, New old Stock, secondhand, vintage, etc.), the keyboard may not work perfectly on Win7.
Windows will still recognize it as a generic keyboard of course, but there are no proper drivers. Cherry's software won't recognize the keyboard, resulting in your extra or programmable keys being unprogrammable. And if you buy a keyboard with keys programmed by the last user, you may be stuck unless you install Cherry tools on an older computer and work from there.
I have a thread where I'm exploring how to fix this issue,
http://geekhack.org/index.php?topic=46185.
Will be exploring DaMorgue's suggestions when I have time on the weekend.
Here's a reply from Cherry's representative:
The G80-8113 was produced on 2002 and the G80-8200 was produced on 2006. They use old electronics (ie. Old firmware, old hardware) and design for the old Windows (eg. Win98) and DOS applications. They do not support Win7 or Cherry Designer software. Please don’t try to modify the keyboard firmware as it may cause the total malfunction of the keyboard.
The old software ‘Configure 291’ is still available to download (ref. attached), it was designed also for the old Windows and DOS. I will not suggest you to use it in Win7. This should be your own decision and responsibility if take the risk or not.
Website :
http://www.cherry.de/cid/download.php?1. In product selection, select ‘G80-195x’
2. Select and download the “Cherry Configuration Software”