where to get kernel/kernel source for belkin usb bluetooth and irda support on powerbook pismo g3

[Ima Sudonim]

Hi,

I would like to be able to get both bluetooth and irda (ok, well at 
least irda) working on my powerbook pismo g3.
I have used yum update and my /boot directory has vmlinux-2.4.20-8d in 
it (how do I verify the exact version, just look at msgs at boot?)

I understand that I have to rebuild the kernel.  KPilot doesn't seem to 
see my irda port with the installed kernel.

where does kernel source come from? Does yellowdog use the same kernel 
as other distributions? Where can I find the source for the latest? are 
there prebuilt kernels that I can use for bluetooth and/or irda?

What about bluez and irda-lib? Where can I get these packages for 
yellow dog 3 or do I need to build them myself?

Thanks for any directions or assistance.

Ima