load at boot is an option in the install routine. Also usually an option when viewing properties or whatever gets one into the setup options for the program.
Of course, loading at boot consumes resources [no big deal with Win XP].
I re-installed the software and the icon is now back in the System Tray. (Yes, my teenage son had the disk, I haven't seen it for months. Thank goodness for "back-to-school" cleaning.)
Still curious how to access the Windows System Tray (folder?) for review of what shows up there and what does not. . .
XP allows you to "hide" items that are not currently in use, but I didn't find out how to add or subtract icons or shortcuts. May be another unexplainable Windows feature.