Vasanth finds a solution to one of my biggest complaints with my M200. I absolutely despise the location of the Windows key, and even the tilda is in awkward place. I'll probably just swap those two.
I was googling for possible solutions like remapping the Alt key in my Tecra M4 to the Windows key. I found SharpKeys. It is a nice app which lets you map any key to another one. The application changes the registry to enable this mapping. This means I need not have it running all the time. There is also no delay because of this.
I wonder if this also works in Vista. I'll give it a shot when I get home tonight.