In reply to Master of Ice:
It's like most of the well known ice climbing venues in Europe. Unless it's stayed warm you're going to find something. If you get a good cold spell you're going to find a lot of choice; and have a great time. There's a good website for up to date conditions
http://conditions.ice-fall.com/ Have a look at the various Secteurs on the left hand side for pictures.
There's a lot of alternatives if the conditions are a bit thin. You're sitting in the middle of a number of good ski resorts. The ski mountaineering in the Queyras is classic; and if the suns out you be able to go climbing on the low south facing cliffs. Winter via ferattas can be fun as well.
Guillestre is a good bases as it sits in the middle of the area. Vallouise is another popular one; but it sits a fair way up a side valley, which adds to the amount of travel time if you want to explore the area.