Ehhh, wireless? Assuming you're using this for gaming/more than what average users do, I recommend wired peripherals, can't go wrong with them.
As for suggestions...
Keyboards:
If you're a normal user...Though it may sound stupid, get a generic, 20 dollar dell keyboard. Trust me, (though no doubt you've used this keyboard before) this keyboard is best, my old desktop I got in the 90's came with a keyboard very similar to this one. To this day that keyboard works and besides the color of the keys fading (12+ years use will do that) its works great.
Link:
http://www.amazon.com/Dell-USB-Keyb...8AB4/ref=sr_1_2?ie=UTF8&qid=1300799967&sr=8-2
Here's a quality keyboard, my friend has one and I've used it multiple times. Pretty nice, keys for my taste don't click enough. Don't want to say too much as I really haven't used it for house on end like the other products I previously recommended. If you follow the link an scroll down, if offers this keyboard with a "Logitech MX 518 High Performance Optical Gaming Mouse (Metal)" which is also a pretty nice mouse imo, my brother uses it and appears to have no problems.
Link:
http://www.amazon.com/Logitech-920-...LQIO/ref=sr_1_1?ie=UTF8&qid=1300800414&sr=8-1
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Mouse:
Regardless if you game or not (I do) I recommend the Logitech G9 *NOT THE G9x, it's an absurd price jut for extra dpi*. Uhhh, not much to say about the mouse, very comfortable, good for gaming, large for people with big hands, the cable doesn't tangle too easily. Its just a really great comfortable mouse. Also, if you decide to buy it look around for prices, they vary greatly. I got mine for 35 bucks a friend of mine got his for over 60 I believe.
Link:
[I would provide one, but as I said prices vary *don't check amazon for this one*]
If you have any specific questions just reply, I'll try to get back to you asap.