Advanced Filter Macro Not Load Automatically When Using Combo Box

I'm very new to this. Can someone please advise. I can't seem to make the macro run automatically for some reason. It has to be manually run.
1. Select from the drop down list in combo box (Value Must be a string & not number) The code below is just some code i found on net
2. Have a macro called filter_stuff output the results from a linked table
3. I need the macro to run automatically when when a value is selected from the combo box

A similar link to the same problem can be found here: http://www.excelforum.com/excel-prog...mbo-boxes.html

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Would a kind soul please shed some light on this matter.

Do advise where to paste the code in (Sheet, Module) etc. I'm really new and keen to learn