following on from John's answer -
to name a list, select your list and then click in the name box (left of the
formula bar, above column A) type a name (no spaces, can use underlines,
start with an alpha character) and press ENTER (doesn't work if you don't
press enter).
you might also like to check out Debra Dalgleish's website on Data
Validation for ideas on what you can do with data validation and dynamic
range names (i.e. so if you add new items to the named list, the range name
grows to accommodate them)
www.contextures.com/tiptech.html
Cheers
JulieD