i took the psat, and later the sat. apparently i did well on the psat, and got commended or some such. i think i did worse on the sat, but wasn't too awful.
i dunno. didn't end up using either of the scores, due to lol college
They aren't THAT bad. I have taken the ACT and SAT. I personally liked the SAT better .. the ACT's science section was death (very hard).
Don't worry about it though, I recommend taking it early (sign up for January) so you can take it a few times and be done before senior year starts because senior fall is sooo busy and the last thing you will want to do is take the SAT again.