TEDSKI-yes, the 777 is replacing the DC10's.
CannedSpam- AA still does operate those routes, except right now with a 763.
I think you should expect an order from AA for them. I think the 777's more or less should really replace the MD-11s and have 764's replace the DC-10 as they have around the same capacity and range. I think it is very possible to expect a good number of 764's in their fleet.
Give me a break, I created this username when I was a kid...