i have a question

i have netbsd 1.4_beta running on an 8550/200 workgroup server
the whole thing installed great, up running, on the net.

run X and that works great, except (ok incomes the problem) it is set for
640x480 8bpp.  this is set on boot up (from dmesg):
ofb0 at pci1 dev 11 function 0: Apple Computer product 0x0003
ofb0: 640 x 480, 8bpp

under the 68k netbsd, you'd boot into macos, set everything (bit depth/
screen size/ etc), but how do you change the settings under the ppc version?

thanks for the help

--
ray