I don't know anything about Aladdin pumps and there is no pre-exisiting driver from NI but you should be able to communicate with it using VISA. I would recomend you start with a terminal emulation program such as Hyperterminal to debug the com settings and cable. Then you can try out the shipping examples for serial communication. From there, you can develop a driver, use the Instrument I/O Assistant, use discreet VISA functions, etc.
