Eric Lindsay's page on IrDA.
Contains a good description of IrDA from different angles e.g. a good summary of the
protocol, problems cause the by the non-existence of the IrCOMM Virtual COM Port functionality
in Windows 2000 and usage of various type of peer device etc.
Should you happen to be overwhelmed with gratitude due to help you've received from this site(!),
feel free to visit my Amazon
Wishlist. :-)