bcb6 com port library or winapi

[thecult]

Hi, I have used some c++ builder libraries for com and virtual com programming but best tools are commercial or demo and free tools
are low quality

anybody can tell me about any good library for comport programming for cbuilder6?

if there is no good tools, then, any good tutorial about com port programming using winapi?

thanks in advance

wbr

thecult