Does anyone have an idea what the resolution of the picture is that pops up when someone calls you (and you have an affiliated pic for that person)?

As of right now, any picture that I put on my 600 gets distorted when it gets shrunk down from 640x480 or whatever to some thing arounf 156x130.

I would much rather have full screen picture ID so that I could just upload 160x160 pictures...oh well, they can save it for the treo 900->