Q: What's the easiest way to ask a Panelist their Age?
A: Use a general purpose numeric textbox entry type of a question. In SIMS 2000 this is called a single Group Intensity, just one element, and you can set the allowable value range, such as 18 to 100.
Here's the Example Questionnaire shown below as a SIMS 2000 transferable file:
AgeExample.DEMO.QUE.ZIP (or right click and 'Save Target As')
Sensory Computer Systems