My experience on 763 is that there is a bassinet that you can mount on the bulkhead above your lap (we've used it multiple times). It's 1st come 1st serve at the airport., Calling ahead won't get you anything besides this answer.

You may want ot do a search for 'Bassinet' on this forum, there are several threads (e.g., http://www.flyertalk.com/forum/showt...light=bassinet)