Make two columns in your combo box. The first is the three letters and the second is what they stand for.
The properties of the combo box should be:
ColumnWidths=.5″;1.5″ (these withds may need to be adjusted to show all info in the drop down)
If the row source type is “Value List”, you must enter your data in the row source separated by commas. And it is based on the column count property. Example “ABC”,”ABC is this”,”DEF”,”DEF is that”,”GHI”,”GHI is the next thing”. So since the column count is 2, “ABC” will be the first column of the first row and “ABC is this” will be the second column of the first row. “DEF” will be the first column of the second row, etc.
If the row source type is “Table/Query”, you need to select two columns from the table query. The first is the letters and the second is the description.