Using a file named iexpress.exe
For anyone interested.
You can make an exe file containing any files you like, and have one of them 'execute' during the install.
A few more features too, like adding a message for the user, check it out.
Windows 2000 has this file located in \winnt\system32 dir.
Also available in XP
To use it, and make your own installs, just type: iexpress in the 'run' box and hit [enter]