In reply to BURTON83:
There are numerous routes (perhaps 4 or 5) to the left of the Chere Couloir on the Triangle, then of course there is the Cosmiques Arete and the Petite Aig Verte which has 3 routes to the summit that I know of. All of these are easy access single day routes that I have climbed in both summer and winter. There are others but these are the ones I have personal knowledge of. For many you will need skiing skills or snow shoes in order to get to them.
Al
Post edited at 16:28