Do you mean the interactive change event of list box A?

What properties should list box B have?

>>I would like to display values in a second list box based on a value in the first list box. For example suppose that list box A contains the values
>>

>>a b
>>c d
>>e f
>>etc
>>

from table data1. Then if I click on a line in list box A I want list box B to show the files
>>

>>h i j
>>k l m
>>n o p
>>etc
>>

from table data2 where the triplets are based on the values a, b, c etc (i,e field data2.field = data1.field where field is a, b, c, etc. Is this possible if so.
>
>You should place your code querying table 'data2' to ListboxA.InteractiveChange event.