Hi Luis, why don't u try using Fieldpoint. The particular fieldpoint i use, use's an rs232/rs485 network interface and an analog input module which u can transfer easly pc to pc, mac to mac etc. Due it being modular.All u need is the network interface for each pc and buy the module when u need for them or just transfer the entire fieldpoint to different pc's etc. They cost around a few hundred dollars for the network interface and then u can buy modules when u want so the expense is not high. The one i use is FP-1000 with a FP-AI-110 8-channel, 16-bit analog input.
they also have many other modules e.g. thermocouple input, analog output etc. And the vi's for these modules are on the NI downloads.
Regards Stuart
