I recently purchased one of these serial to usb converters:
http://www.kawamall.com/pd_1x_rs232usbcbeconxp.cfm
I've verified the interface still works on my desktop while using digipan
The problem, is when going thu the serial - usb converter, the radio wont transmit. Maybe i need to spend more than 6 bucks for a converter !
The driver software that came with the usb-serial converter loads Aok & I can specify a com port ok on laptop, when it
recognizes the "new hardware".