I don't have any serial ports on my PC but have a ethernet connected Digi server 8 with 8 serial ports and software drivers so the ports appear as local ports.  It has 16550 uarts (actually 16C554).  Can someone tell me if this will work?  If not is there any diy or low cost hardware (PIC, avr, etc) that converts the IR to true rs232 that anyone can recommend?  Offloading the IR decoding and encoding from the main cpu would be a nice plus.
 
I am running Fedora 10.