Happy to help. I have a Lenovo ThinkPad T530. Specs as follows:
Intel i3 3110M - 2.90 gHz
8 GB DDR3 RAM
Intel HD 4000 graphics
Not the best, but I figure you want a range to test. I run the existing game with bump mapping, slight shadows, high res texture pack, detailed water/land. I get about 25-30fps most of the time.
One question: will it be playing in the same arenas as everyone else, just with different graphics?