It works for me (W2K3 enterprise) after a bit of hacking.
Add correct device category by finding Ir320.inf using google. Remove the exclusion and sys file from the inf. Install and remove it again
Or maybe a registry file like this will do... (save with extension .reg and run it)
;***** BEGIN
Windows Registry Editor Version 5.00
;
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{6BDD1FC5-810F-11D0-BEC7-08002BE2092F}]
"Class"="Infrared"
@="Infrared devices"
"EnumPropPages32"="NetCfgx.dll,NetPropPageProvider"
"Icon"="1401"
"Installer32"="NetCfgx.dll,NetClassInstaller"
;***** END
Download Windows W2K3 normal server (or 4-in-1). Expand some inf files. Extract some files from DRIVER.CAB.
hidir.sys irbus.sys irclass.dll irda.sys irenum.sys irftp.exe irmk7.sys irmon.dll irprops.cpl irsir.sys irsnap.chm irstusb.sys ir_begin.wav ir_end.wav ir_inter.wav KBDIR.DLL msircomm.sys nscirda.sys rasirda.sys smcirda.sys viairda.sys wshirda.dll
Then install your IR device using those files. It should automatically copy them to the right system dirs.
Good luck and regards,
DarkFader
DarkFader.net
PS: don't ask me to send the filez