Yes Viktor

If you are have 2 keyboards and one thrue only than is good solution with MAUDIO they are have separate output for PC HOST and it is working.

http://www.m-audio.com/index.php?do=products.family

M-AUDIO is having good interface for use.

or
http://www.maplin.co.uk/searchtemplate.asp?criteria=FIREWIRE%20MIDI%20INTERFACE


It is not so expansive. You can buy it via EBAY or other.

BR.

MAgica Alfa