uncompressing kernel

[Jacob Stowell <js8319@csc.albany.edu>]

hello,

i was wondering if someone could help me.  i need to install sound
modules into the kernel (2.2.15) and i do have the kernel-source, but it
is compressed in a .bz2 format.  i am new to this and my last kernel was
gzipped which i know how to handle.  also right now i only have
/usr/src/ directories and was wondering if when i uncompress the kernel
source will it create the linux directory (/usr/src/linux), or do i need
to make it.  any help on this matter will be greatly appreciated.  

thank you,
jake