As a point of reference for anyone else trying to set up an eee 1001p: I found that for the eee 1001p, which uses a GMA3150 graphics adaptor, 915resolution doesn't work. (It doesn't recognize the GMA3150.) However, I met success when I loaded these extensions under Tiny Core V3 alpha 3:
graphics-2.6.33.3-tinycore.tcz
Xfbdev.tcz
Without these extensions loaded, I got a perfectly serviceable 800x600 under Xvesa, but with them loaded I get a beautiful native 1024x600. (I also tried to get Xorg to work with the graphics extension, and it found the intel driver when directed to look for it. But all I could get from Xorg was a black screen, and Xfbdev works out of the box.)