ComboBox Fustration!

Hi All!
Please tell me how to:
I have a combobox that needs to fill other fields upon selection by user.  This works fine if the user uses a mouse and clicks on a selection and I have Load_OtherFields in the click event.  But I have to also assume the user will be using the keyboard.  The keypreview is set to true using "SendKeys" - {TAB} so the user may use the Enter key to "tab".  This cannot be changed.  Where do I put Load_OtherFields so that when user scrolls the cbo box with the down key, a call isn't being made to the database each time? I realize the click event is invoked each time the down key is pressed.  I believe a flag is in order but don't know how to code it.  I've been putting this in the LostFocus Event of the cbo but what if I want the cbo to retain focus?  Any help will be appreciated!
alicelknightAsked:
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Richie_SimonettiConnect With a Mentor IT OperationsCommented:
Do a search here, at EE. If i remember well, there is an old question regarding your problem.
Cheers.
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alicelknightAuthor Commented:

Hey Richie, Thanks!  And for anyone else, here's the link:
http://www.experts-exchange.com/jsp/qShow.jsp?qid=20069835
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Richie_SimonettiIT OperationsCommented:
You are welcome anytime!
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