I compiled a stripped down version of the GENERIC kernel (removed SCSI
devices and a few other things to make it small enough to netboot). 
Netbooting it works just fine.  I want to be able to play music
through my Cube so I installed a SoundBlaster PCI and added the
following to my kernel configuration:

device eap* at pci? dev ? function ?
audio* at eap?
midi* at eap?

This compiles fine but when I try to netboot it I get the following message:

Decompressing - done.
invalid bootinfo (standalone boot?)
[ Kernel symbol table missing! ]

This is frustrating and I don't know what else I could try.  I thought
adding a sound card driver would be simple and straight forward. 
Could someone explain what's going on?

Daniel