In reply to PeterBlackler:
> Second that for Hilary's "Chamonix Mountain Adventures" book [and others by her too] - they are excellent and sounds like just what you are looking for
Third that, it's really good.
The walky days we had while we were there were the Aiguillette des Posettes (which was nice), a walk up to the Lac Blanc hut from the Col des Montets (we had a go at the Aiguille du Belvedere the next day, got scared, backed off and walked back down to La Joux) and a walk from Le Buet up the Tre les Eaux valley to to a peak that I can't remember the name of and back down past the Loriaz refuge. If we'd had more time, we'd probably have gone and done Mont Buet and the hike up to the glacier junction on the north side of Mont Blanc.
The Tre les Eaux trip was particularly good - some bits of pulling on chains and a fairly remote feel. The night at Lac Blanc was also good if you fancy something along those lines - the hut's a bit more genteel than the proper mountaineering huts on the south side of the valley, the food's really nice, and the view from the dining room - Aiguille Verte, Grands Jorasses, Mont Blanc - is probably one of the best in Europe.