yeh should be straight forward mate, just check on raileurope website, just google tgv, its also possible to book your tickets on there, thats what i did when i went down with the eagles
Went ahead without too much of a hitch, I hear (we used Catalans Sports Tours for our transfer). Get a taxi from Carcassonne Airport to the train station, and Toulouse station is very close to the city centre, though there are tons of Metro stations around and about if you don't fancy a taxi or walking it.