[CMake] How to change/set default generator

[David Genest]

Hi fellow cmakers, 

Is it possible to set the default generator cmake uses so it is not
necessary to specify it at the command line ? Right now, on my windows
version of cmake 2.6.2, the default generator is "Visual Studio 8 2005".
I would like it to be "Visual Studio 9 2008".

Thanks, 

D.