If you just want to do testing then either hyperterm (comes with windows) or a similar program like putty, several others out there.
Just make sure you set the program for the com port, baud rate, and parity.
If you want to write a custom app both visual basic and C# are good choices with easy to use communication via the com port.
Hi I have great results in communicating with these Serial emulators. I prefer most COMPORT TOOL KIT. Because it has a nice Visual interface & Display times.
Also I have experienced with those software’s too in WINXP.
There are packages for the PC that do this for RS232 or RS485. Com Port Tool kit is one of these. They require 2 RS232 ports and most/all(?) are time limited demos.
Pickit2 comes with a serial line analyzer package that might be nice to have if you are going to be working with serial communication.
The next time a student comes looking for a project we could suggest a PIC based multi protocol serial line analyzer that does RS232/RS485/PS2/USB. Connect to PC via USB.