Rated 5 Stars (out of 5) - I was using the virtual COM port for my C# app to communicate with a PIC micro via a Roving Networks RN41 device. It was problematic for several reasons. The 32feet.net stuff made for a super clean solution and reliable connection and it only took a couple of days to get working. Excellent stuff. I would prefer the samples to be in C# but the VB code is readable enough.