I am trying to do cascading drop-down lists in excel so that when I select my
choice from my first list, only information pertaining to that choice shows
up in the second drop down list. Example: selecting a type of wood for a
floor in a first drop-down list one expects only the colors available for the
type of wood selected to show in the second drop-down list not all the colors
of all the types of wood.

The problem I am having is that I have more than 8 primary and secondary
lists and am not able to do my =if() function in the 'source' area of the
data/validation. I've read about using index/match formulas or by using a
UDF but am unsure as how to do either of these... a little help?

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KM