Dp4 Midi And Midi Delay, What?????????? Options

[simmac]

Maybe I'm wrong but I did't find midi import in the DP4.
Is it possible I can't import a midi file into the DP4?

Another thing.
I'm using Reason2 and DP4 with powerbook g4 667mhz 512 Ram,edirol ua-5 usb audio interface and edirol um-1sx midi interface.I have delay from my midi keyboard with the reason already (I can deal with that) but of course when I use the reason in rewire mode under the DP4 the delay is huhges.
What to do?
Maybe my computer is really slow.I should trash it and buy a new one ore more ram can help.?
I'm not that expert in midi becasue I usually worke with audio.

Thanks guys