I guess it isn't difficult to install it on Milky Way... try to follow the instructions for subSilver2.
You need to apply only 3 small edits to template files... what did you not find?
The real problem was that it was not appearing as it should.... AND...
OK, now I feel a real idiot
I had made all the changes and I could bet my life that it was messing up the whole page..
I just re-did the changes and it seems fine...
Sorry for the trouble....
OK, a correct (I hope) question:
Is there a way I can change this style's width (not beeing fixed width)