If you're just replacing surface mount caps, and if you're reasonably careful, you can do it with two <$10 each soldering pencils from Radio Shack. They sell a grounded 15 watt pencil for $8.99 the last time I checked.
Apply one pencil to each side of the cap and wait until it lifts easily so that you don't exert any force on the underlying pads. This is the method popularized on Marc Schrier's Clock Chipping Home Page all those years ago, when boosting your IIsi from 20 MHz to 27 MHz was all the rage.
That's how I remove my old caps and resistors.
To solder in new caps, clean both pads with desoldering braid/wick. Tin one pad. Carefull position the cap, hold it down with a screwdriver or similar tool. Heat the tinned pad until the cap sinks flush onto the pad. Remove heat while continuing to hold the cap down. Let the solder harden. Now solder the other side.