P
pvbrowser
If you google:vb6 com port
you quickly find your information.
For example:
http://www.thaiio.com/prog-cgi/0002_serial.htm
What also might be of interest is
how we do it in C++:
http://pvbrowser.org/pvbrowser/sf/manual/rllib/html/classrlSerial.html
What type of trouble you might have with USB/Serial adapters under Windows:
http://www.syscompdesign.com/AppNotes/usb-com-port-debug.pdf
PS: http://pvbrowser.org together with scripting in Lua might be easier for you than Basic.
you quickly find your information.
For example:
http://www.thaiio.com/prog-cgi/0002_serial.htm
What also might be of interest is
how we do it in C++:
http://pvbrowser.org/pvbrowser/sf/manual/rllib/html/classrlSerial.html
What type of trouble you might have with USB/Serial adapters under Windows:
http://www.syscompdesign.com/AppNotes/usb-com-port-debug.pdf
PS: http://pvbrowser.org together with scripting in Lua might be easier for you than Basic.