Hi,
port 1025 is usually open by default on Win2000 & XP systems.
if you google for info, you will find reports that e.g. Taskplanner is keeping it open
However, disabling taskplanner is not generally a good idea, especially on XP-Systems -> RESTORE and PREFETCH may not work any more..
imho there is no grave danger presently in keeping 1025 open as I don't know of an exploit using this, but surely you can close it to external access by XP's or other FW's