Here's a picture of the settings that I use on my 13" Macbook Pro with a 9400m.
I went against the computer and maxed out my units, just to test it out. The lowest I got was 20fps when I let my army go free inside of the enemies base, other than that it was quite smooth (30-50fps). I'm sure it will dip a lot when there is a massive 200vs200 battle going on, but I can always lower the settings some more.
http://s98.photobucket.com/albums/l259/StopSign24/?action=view¤t=SC22010-04-1418-13-15-91.jpg
I went against the computer and maxed out my units, just to test it out. The lowest I got was 20fps when I let my army go free inside of the enemies base, other than that it was quite smooth (30-50fps). I'm sure it will dip a lot when there is a massive 200vs200 battle going on, but I can always lower the settings some more.
http://s98.photobucket.com/albums/l259/StopSign24/?action=view¤t=SC22010-04-1418-13-15-91.jpg