There are several computer related ergonomics that can assist and help ease the discomfort from repetitive stress injury.
The first place to start if you are one that has to sit a computer for extended periods of time would be for you to change the type of keyboard that you use. Ergonomic keyboards are the ones that are split in the middle which allow for a more comfortable and natural reach for the keys. Or you can get a raised keyboard that puts your writs in a more comfortable and natural position for you as you type.
Also available is a vertical and split keyboard that keeps your hands in the handshake position as you type for optimal physical positioning. This type of specialty keyboard is currently rather pricey. For a more cost effective approach you should visit your local office store and check for the various computer ergonomic devices that pad and help keep your joints in the proper position to guard against repetitive stress injury.
Next up to evaluate is your chair. Is it comfortable, sturdy, and conducive to you sitting with proper posture? If not, you should purchase one that is and does promote good posture. Maintaining good posture as you...