trying to install a driver module

[chris quillen]

i am running ubuntu dapper drake with kernel version
2.6.15-20-386 on an intel pentium 4m. 

i am trying to install an X10 linux driver module (gnu
wish project). when i type make as root user, it
errors out saying 

/lib/modules/2.6.15-20-386/build: No such file or
directory

I already have the source tree installed. do i need to
recompile my kernel in order to have the build folder?

any help would be greatly appreciated.

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