Hi TN,
when you use a program, XP puts it on the most recently used list on the
start menu. you probably used that program but not the other..
here is a cut and paste, from Windows Help and Support (searched for Start
Menu)
Start menu overview
Clicking Start displays a menu that lets you easily access the most useful
items on your computer. You can click Help and Support to learn how to use
Windows, obtain troubleshooting information, receive support, and more.
Clicking All Programs opens a list of programs currently installed on your
computer.
The list of programs on the Start menu is divided into two parts: the
programs displayed above the separator line (also known as the pinned items
list) and the programs displayed below the separator line (also known as the
most frequently used programs list). The programs on the pinned items list
remain there and are always available for you to click to start them. You
can add programs to the pinned items list. For more information, click
Related Topics.
Programs are added to the most frequently used programs list when you use
them. Windows has a default number of programs that are displayed on the
most frequently used programs list. When that number of programs is reached,
the programs you have not opened recently are replaced by the programs you
used last. You can change the default number of programs displayed on the
most frequently used programs list. For more information, click Related
Topics.
You can customize the Start menu by adding a folder called My Recent
Documents that contains the files you opened most recently. Another way you
can customize the Start menu is to set items to open when you pause on them
with the mouse, a simpler way to view the contents of the item. For more
information, click Related Topics.
Hope that helps!
nada