Best tutorial for Ubuntu 14.02 and AMD HD GPUs

Hell everyone,
I’ve used a few different tutorials on setting up Ubuntu with AMD GPUs but I always get stuck at one step or another. Is there a tutorial out there that’s still relevant and accurate? I seem to have trouble installing the correct drivers for my AMD HD 5870s, I’m trying to use CGMiner 3.7.2 but when I run ./cgminer it just shows the command line again.

Thank you

I’m guessing your plan is to GPU-Mine Peercoin’s PoW?