Settin Up Midi Controls for Cubase...

My shit recognizes my midi controller and everything, i dont have any problems wit not detectin the shit, the problem is latency.

How can set up my shit so i dont get such a long ass delay from the time it takes to hit a key to the time it actually plays the note thru cubase?

I can play fine in cubase, i can play fine in reason, i dont have any problems when they are running separately, but when they are rewired together, cubase plays fine, but i cant play in reason without a long ass delay.

BTW this is the same for Reaktor and any VST that i use thru Cubase.

Ive looked in Cubase and found where to adjust the shit, but it seems like nothin works...

Can i get some help

PS : I got a 250 gb hard drive
512 mb ram
and intel pentium 4