Midi connections

Hi all. I'm very new to Qtractor and have yet to have it do what I want to do. Basically, I want to have a midi track sent out to my midi keyboard and have the keyboard play the notes in the Qtractor midi track. The way I understand it, in the connections window I have to connect Qtractor to my midi output to send to my keyboard. The problem is that I can't make the connection!

My computer has an onboard sound 'card', (Intel 82801G) and I am using a E-MU Xmidi1x1 usb midi device to connect to the keyboard. The connection window's midi tab shows:

14:Midi Through
20:E-MU Xmidi1x1 Tab Midi 1
128:Qtractor

in both panes. I presume that what I want to do is to connect Qtractor in the left pane to E-MU Xmidi1x1 in the right pane but it will not let me do this. I can however connect Qtractor to Midi Through. I don't seem to be able to make *any* connections to or from the E-MU device.

These little problems always seem to be a result of a short circuit between my ears so I will be the first to admit that I have probably missed something that is total obvious somewhere. I'm hoping that someone out there will be more knowledgeable about this and perhaps clear up the short circuit so I can make some music!

Cheers.