How to control HV power supply (0-5V control voltage)? - labview

Hey there, I (LV newbie) wonder how to control my DELTA ELEKTRONIKA Powersupply with Labview. The control interface is a 0-5V ****og input to set the power supply's output current.Also I want to get some feedback of the set power supply current from an second (GPIB-controlled) instrument. So how do I have to program a closed loop contol (application is not time critical), cause it would be mixed up of controlling by ****og out (0-5V) and feedback loop driven on the GPIB-Card?  For a first step a simple control loop to set the current and monitor it on an ****og input would also be an assistance .THX for anyone helping