my typing lows to about 40wpm when i have to type and read at the same time. i never could get used to looking at type and typing at the same time. if im just typing whats in my head, i can get upwards of 70 wpm depending how passionate i am about the subject. i usually dont have spelling issues, but i am currently slowed by my laptop keyboard, sometimes the S, W or C keys dont want to work and i have to go back and hit them a few times to get a char out of it. kind of annoying, but i cant spare time to send it to dell and get it replaced.
id say if youre having trouble typing, go to download.com and get some of those typing programs for kids. mainly it is repetitive keystrokes, kind of like practice for your fingers.