I have had a 80 DK for a while and just recently decided to get back into the game and gear up for raids and what not. Ended up buying random gear to get my GS up to about 4.5K right now. Most of them have STR & STAM but my DPS is still super low. I haven't gotten anything enchanted yet because I still need to get better gear. I recently switched from frost to unholy for heroics but my DPS comes in fourth place behind the tank and usually sits at 1.5-1.8 max.
Do I just need better gear or am I just a noob?