Stuart Koehl, writing in The Weekly Standard online, does a very nice piece of military analysis and forward planning vis-a-vis the Russian-Georgian conflict.
What he prescribes for the Georgian army is essentially what the Afghans did to stymie the Soviet army: missiles to harass Russian air power, and mines (think non-improvised explosive devices) to take out their armor. The terrain is somewhat similar and armor is (mostly) road-based in mountainous country like Ossetia.