This sounds similar to Hilmar's sugestion of an interface similar to what Outlook Express uses for it's email rules.

I like the ToolTip touch... I frequently forget about that.
Thank you.

I'm still not sure which way will be best, but right now I'm leaning towards using a grid with checkboxes for the email addresses to include as CC's.
I use grids else where and have already trained the user to go down from the last item to add a new item. I'll still need the tooltip idea tho because of space limitations.
Thanks,
Rick
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>i would build that out of a list box and a textbox obove it.
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>in the text box valid build a checking routine to see if the email already exist, if not, messagebox to user if he/she want's to add.
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>u could also make the text box shorter and add buttons to the right (or left) of the txtbox. or you could add a shortcut menu to the textbox and list box for functionality.
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>if text is not beeing displayed completly in the textbox because it's too short, you can add the current textbox value as a tooltip text (i do that in the refresh().
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>hope this helps.
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>
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>>Hi, I need to add a functionality to an existing form...
>>Space is limited. I can probably give a height of 100-125 pixels and a width of 300 pixels.
>>
>>I need to add the ability to add one or more email addresses to an order.
>>I have a table that contains Client Numbers and Email Addresses.
>>I need to present the list of existing email addresses for a client and allow the user to select one or more email addresses from the list.
>>I think that sounds like a list box... but I need one more thing...
>>
>>I also need to allow the user to add as many new email addresses to the list as they want.
>>
>>I thought I could use a combobox but I don't think it allows me to do multi-select.
>>
>>What would you recomend?
>>
>>TIA,
>>Rick Liebespach