I've got a E6400 however I'm wanting to get another set of midi inputs so I can use ZoeOs alongside my sequencer. I'm willing to pay ?60- ?100 for the card all in incl. p&p.
Have you tried to use virtual midi ports like MidiOX ?
I use it so that I can play on the E-MU while editing my sounds in ZoeOS ... there's no reason why it would not work the way you want.