Hi rlee,
This had me stuck for ages also in Access though, sounds like you just want a value in there - and that's normally by default the first value.
Dont know if this'll work with Excel, but try this in the 'Default Value' property of the control...
[mycontrolname].[ItemData](0)
Regards,
Darrylle "Never argue with an idiot, he'll bring you down to his level - then beat you with experience." darrylles@totalise.co.uk