I found an interesting guide to cascading comboboxes in another thread (link below) but I' attempting to perform this function within the userform itself. I don't want to link anything to an excel sheet and have been using 'AddItem' for everything. I need to be able to allow a selection in one combobox (or checkbox if need-be) control how another combobox behaves, essentially making a dropdown choice for the user and disabling it's ability to be reactivated. Is this even possible?

Since this is really a general inquiry, no code has been written yet but for simplicities sake, let's say Combobox1's selection should affect Combobox2's selection and then 'grey' it out.

http://www.excelforum.com/excel-prog...selection.html

If any more information is needed, please let me know. Still learning all of this stuff and I can foresee the need for this capability in the near future for the application I'm working on, just hoping to get a jump start instead of painting myself into a corner. Thanks in advance for any/all help!

-Orestees