OK, so I found this IR PCVA-IR6U receiver at a yard sale. Neither Windows nor Linux seem to work with it without drivers which I haven't found yet...
usb 2-2: new full speed USB device using uhci_hcd and address 2
usb 2-2: configuration #1 chosen from 1 choice
lirc_dev: IR Remote Control driver registered, major 61
lirc_dev: lirc_register_plugin: sample_rate: 80
usbcore: registered new interface driver lirc_mceusb
lirc_mceusb: USB Microsoft IR Transceiver Driver v0.2
Bus 002 Device 003: ID 045e:006d Microsoft Corp. eHome Remote Control Keyboard keys
BTW, I don't have the keyboard - just the IR box. I was thinking I could use it as a receiver for IR remote to control Rhythmbox or the DVD player...