Do you want an illuminated computer gaming keyboard
To me, one of the most important features of a computer gaming keyboard is having it be illuminated. Lets face it, today's games are much more complicated than in the past. With numerous keystrokes and macros you almost always need to glance at the keyboard during a game and wasting time finding the key can mean disaster. If you like to play in the dark an illuminated computer gaming keyboard means you can actually see the keys while playing, this will save you time and might lead to victory. Well, it certainly won't cause your defeat, let's put it that way.
How many special function keys will the computer gaming keyboard need?
This is mostly determined by the type of games you play. Shooters generally don't have many macros or even special keys, the 1-9 keys are usually all you need. MMOs on the other hand may have dozens of different screens and commands that you need to access at any given time. Having programmable buttons on the computer gaming keyboard allows you to program any game specific keys you need, a really nice feature on a computer gaming keyboard. One with good robust software will allow you to program macros into the keys.
Get a good quality computer gaming keyboard!
Don't buy the cheapest computer gaming keyboard you can find. Remember you'll be using this for gaming so it will take some abuse. Get a good quality one with good reviews so it will last a while. Keep in mind that if you'll be playing FPS or action games you'll probably be abusing it a bit more than a strategy gamer. Look for one that's specifically build for these types of gamers.
Which computer gaming keyboard should you get?
Well, once you've decided on what features are important in a gaming keyboard it's important that you read computer gaming keyboard reviews on such sites as Consumer Search or Consumer Reports. They'll have honest, unbiased gaming keyboard reviews that'll help you get the best one.
Here's a great article that goes into more detail on the different types of gamers out there and the keyboard that's most suited to their individual play style.