Thanks Yen! I think I found out my problem. I do not have an OPC lookout driver installed when I try binding the controls of the PLC with IA OPC Server 5.1--sometimes not having the right stuff can be a headache. Not to mention, being able to obtain the stuff you need without breaking the bank. Anywho, I did notice an DsOPC server that comes with my Direct Logic software that I was able to bind with some toggle switches, so I might just take this route instead because the OPC client is easier to obtain. It appears the server is communicating with Labview, but not with the PLC. I guess there are usually 4 parts to this type of system, and don't quote me on this, in order for the system to work. The application; the OPC server; the OPC client and, of course, the PLC or whatever. I think I only have 3 parts....Yes this will end up driving me insane before you know it, but I have learned a lot. I just hope I learn it completely.