ASP.NET 1.1 - Required field validator -- Either OR between two fields??

I have two dropdownlist fields on my form.  The user must fill out one OR the other (or both) of these two fields.  Is there a way to use the required field validator across two controls in this manner?  If not, how can I code what I'm describing here?

thank you!
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adatheladConnect With a Mentor Commented:

You can use a Custom Validator to do this - this gives you the flexibility to right your own script to validate this scenario and return the appropriate validity status.

There's an example here:
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