I think that is for communication with local devices (it was intended originally for printers and such if I remember correctly. Bottom line though, it was not intended to be a remote and will not have the range you are looking for (at least I very much don't think so).
I think I've only seen it used once to sync with a palm years back from a few inches.
I have two Fujitsu 3500 touchscreens. I have been unable to get the one Fujitsu IR keyboard to work with either (yes- batteries are new :unsure: ). I am running XP Pro (on both), and have fooled with the BIOS settings some.
I have "Googled", but not found much success how to get the IR keyboard to be recognized by the 3500. From what I have read on some other boards, the IR keyboad should "just be recognized" after a reboot (once keys are pressed).
If anyone knows a trick to making these things "see" the IR keyboard, please post.
If you have a Fuijistu 3400/3500 and the IR keyboard IS recognized, please tell us you BIOS and Windows settings.