I dont have any knobs or buttons on my midi con...

I bought a keystation 61es from M-audio...got it to work, for now, hopefuly...but anyways, It doesnt have any buttons at all, is there a sepertae accesssory i can buy to connect to it to give it that ability so I dont have to keep going to the Mouse and my PC to change sounds?

looking at the M-Audio site it is a midi controller. It should have midi out which connects to the computer- your sound card will need a midi input jack or you won't be able to use it anyway. Here is the quote from the specs:
'separate MIDI out jack routes MIDI signals from your computer to control external devices'. As such I would say it is a midi controller unit ie. you can record midi signals on your computer using some sort of midi app (Sonar Pro-Audio etc) and either play them back from the synth chip on the soundcard or send it out to other external device players (from the computer) to a midi player or some such.