In reply to mypyrex:
When do you want to do it?
We went out in mid Feb 2009 and although we had 2 good days (the walk to hut and then summit day), the rest of our possible mountain days were wiped out by the storm from hell.
If you do want to do it in winter then you do have to consider many more things, including the fact that donkeys will not be able to get up to the hut.
I have all the details of who we used in Imlil, transfers from Marrakech to Imlil, and then the Riad we stayed in for our last night in Marrakech.
If you want them, let me know.
David