Is it possible to use the Auto-Filter in Excel 2003 in the following way:

Cell Value: Requirements, Testing
Cell Value: Requirements
Cell Value: Testing

Is there a way I can enter my cell value such that the Auto-Filter values
will only show "Requirements" and "Testing" in the dropdown, but not
"Requirements, Testing"? I've tried using ; , | and even hard returns as
separators, but to no avail.

Am I asking too much of the auto-filter?

Thanks in advance