As I like to keep my Windows 2000 system tray clean and tidy, I do my best to remove icons that I do not find necessary. The latest of these is for Ahead's packet-writing software InCD, which has a remarkably ugly yellow blob to denote that InCD is running, and that the optical drive is empty.
If you right-click on the icon and choose options, then you will see that you can tick 'Hide tray icon'. However, what if you do this, but decide later that you want the icon back? Well, one option is to right-click the drive in windows explorer and choose 'InCD Format'. This will not format straight away, but goes to the format options screen. From there you can return to the InCD options screen that you've been looking for, and then you can untick 'Hide tray icon'. It's a slightly roundabout route, but I think it's a fair comprimise for people who are fussy enough to remove the tray icon UI in the first place.