Hello, I too am running Kalyway 10 5 2 on a 1501
I spent a very long time looking for a way to get the video drivers on it, but i was finally successful (well, sorta)
Go here,
Callisto and download Callisto_b003fixed
This is what works. not sure about the other callistos
Once it's done downloading and unzipped, open the installation.html and run a few terminal commands, and if you did it right, (took me a few tries) you can change your screen res to 1280x800 instead of having it at 1024x768
Now, a few things you should know about this.
I haven't yet gotten Quartz Extreme working yet, the graphics section of the System Profiler says it is "Not Supported"
It will show your grphics card, but it will read 16 or 32MB I'm not sure why, or how to fix this.
and finally, for graphics acceleration, I found that if you have something like a USB mouse or keyboard or something plugged in when you first turn it on and DON'T unplug it at ALL it will be accelerated. Now, it isn't the best, but before i had them plugged in, the bootlaoder would hang, and I would have to touch the touchpad to get it going again.
Hope this helps =)
If you find anything else, feel free to let me know