This doesn't solve your problem, but one thing you can do to display multiple columns in your dropdownlist is to combine them in a sql statement. For example, you have a table called employee with the fields eID, strFirstName, and strLastName. You want to display the whole name, so in the sql statement say:

SELECT eID, (LTRIM(RTRIM(strFirstName)) + ' ' + LTRIM(RTRIM(strLastName))) AS WholeName FROM employee

Now just use WholeName as the display in the combo. It would be a pain to combine 5 of 6 columns, but it is better than nothing.