I have read the shop manual but the directions seem to be for an older
> model. I have a '99 Tacoma Prerunner and need to remove the rotors to
> have them turned.
>
> Can someone tell me how to get these things off? I cannot see where
> they are bolted on. There is a silver cap in the middle of the hub but
> it appears to be presses in and cannot be removed. What am I missing?
That silver cap probably _has_ to be removed. The wheel bearing nut is under that, secured by a cotter key. Be sure to repack the inner and outer wheel bearings while you have it apart. Get the shop that turns the rotors to do it, using a grease packing tool. Doing it by hand is messy and not as effective.
On one of my old vehicles it was possible to remove the rotors by unbolting the spindle bearings. I'll bet you aren't that lucky.
Tom S