Hi Jamie,
Until the most recent XL version, a list was just an informal way of
organizing data in a worksheet. It still is, really. It's just a matter of
putting different records in different rows, different variables (or
"fields") in different columns, and the name of each variable in the list's
first row. The column variables should be adjacent to one another, as should
the records in the rows. Some Excel features work much more easily, and some
work only, with this sort of layout.
There is a List command in the Data menu of Excel 2003, which might make
things a little easier for you to set your list up, but if you lay your list
out correctly you don't need it.