While waiting on Catclysm to drop, I decided to roll a priest (dual spec disc/shadow). Got her up to level 41 and was hoping someone could look over my specs/gear to see if I'm on the right track. Any help is appreciated...
Generally, when levelling a Priest I tend to avoid small passive damage boost talents like Darkness and Improved Shadow Word: Pain, and pick up "PVP" (utility) talents like Silence. It is unlikely that you are ever going to die because your Shadow Word: Death did 6% too few damage to kill the mob, compared to how likely you are to die if you have no way of interrupting any casts.
You'd have done yourself a favor if you would have gone holy with 3 points in spirit tap and a glyph of smite - it is faster than shadow before imp. shadowform and VT.
As for your disc spec - I'd take imp. flash heal before focused will - you do not have penance yet so you are using this a lot.