I know I know, its ancient...
But I've finally decided to let go of it now that its been superseded by not just one, but TWO newer editions of Visual Studio.
Unsurprisingly, the uninstaller didn't work. So, I had to snoop around my computer looking for things that may work.
Luckily, the uninstaller was there all along. Its just that the uninstall file used by "Add/Remove Programs" wasn't the right.
To uninstall this historic piece of software, go to "C:\Program Files\***Visual Studio .NET 2003 Folder***\Visual Studio .NET ***Installed Edition***" and run "setup.exe"
Mine happen to be:
"C:\Program Files\Microsoft Visual Studio .NET 2003\Visual Studio .NET Enterprise Architect 2003 - English"
It should take a few minutes to uninstall, so you'll have plenty of time to wipe your tears while the ashes are thrown into the sea.