Since I'm in the mood, here's the table you'll find in the datasheet
:The first column is the Baud Rate you desire. Fosc is your clock speed (aka crystal/oscillator frequency). The second column is the actual (true) speed of the UART generate from the PIC at that Fosc.
Anything with error <3% is ok, and can tolerate up to 10-15 bytes before the UART start sending garbage value. Your program only send 2 byte at a time, should not be a problem. If it does, just change to higher baud rate.
Table 10.3 is where BRGH=0, and Table 10.4 is for BRGH=1. It is a register setting in PIC for normal speed (BRGH=0) and high speed (BRGH=1). BRGH=1 generate less error (take 57.6k for example)
You need to read up more on UART for PIC before you can actually implement it. Shahrul blog has a very good write-up.
I am not familiar with VB either. All I remember is I didn't have any hitch with baudrate = 125k via hyper-terminal. So PC hardware is not a problem, all you have to do is to figure out how to poll the value from serial port.
