Thanks for the reply. OK... I started VSPE and set it to Com port 10 and turned on my Perseus and VCom is on. However, when I open up the BobSmeter, it will not work and a window shows up and says " Perseus is off, Please start it. Do you know what needs to be configured at this point to get it to work. VSPE is set to COM 10 and so is the BobSmeter. Is this correct or should it be configured another way?