Thanks all, I've since figured out my problem in TvZ (after losing all five of the games where I got paired against Zerg), and it's just that my unit control is awful. If I work on my micro I'll be fine. Er. Ish. But, you guys gave me some beginner's advice for meching, which is a strat I'm new to and don't know much about, so thank yeh thank yeh. :D