Zaptel error - need advice!

Hi im trying to compile the zaptel drivers on ubuntu

ive download the kernal source for 2.6.12-10-386

keeping getting this message when doing a make linux26

WARNING: Symbol version dump /usr/src/linux-source-2.6.12/Module.symvers
is missing; modules will have no dependencies and modversions

i can’t find the Module.symvers , where is it or how do i get it ?
not sure what i’ve done wrong here. im new to linux so be gentle with me :