> Does anybody have experience with interfacing load cells and thermocouples
> to microprocessors? And does anybody know where to find practical
> schematics about it on the internet?

I have successfully interfaced a K-type thermocouple to my PIC.
I am using Analog Devices AD595 Thermocouple Amplifier.
www.analog.com

Not sure what a load cell is....
Dave Celsnak