Good to know n64ra, thanks.
I guess I'm just going to go with this: http://www.amazon.com/exec/obidos/tg/detail/-/B000J13GKQ/ref=pd_luc_mri?_encoding=UTF8&m=ATVPDKIKX0DER&v=glance
It's a christmas gift for my RTS loving GF who's never played it before, so if she really wants the expansion I...