Initial Connections -Evolution MK461C USB Keyboard

I have just got Logic Pro 8 and can not figure out how to get my Evolution MK461C USB Keyboard connected to Logic Pro 8. I can see that there is an input being registered on the transport bar but the moment i release the key on the keyboard the statement reads "No In" Can somebody please help me with this as I am very new to Logic and would love some assistance so I can get my USB keyboard in there and start playing around with some ideas. I understand how to initially connect it but I can not get a sound out of it and also it is not being registered in the input levels. The annoying thing is that when I use Main Stage it registers it and I can play.......Can someone please help? Thanks Alex