Default Help me for Compiling kernel modules (tun.ko) for Andromax E860

Sorry for my english.
i have a phone Andromax E860 with stock rom and the version is Android ICS 4.0.3, with kernel 3.0.8
i want to compile some module like tun.ko
can you help me to compile this module?
i need it for running DroidVPN or OpenVPN. but i can't use because not installed tun.ko module.
and i try to install but still can't loaded. and always fail.
help me please.

i use command uname -a for info.
and this is for result.

Linux localhost 3.0.8-perf #10 PREEMPT Sun May 27 10:35:42 CST 2012 armv7l GNU/Linux