Automatically highlighting the first/top item in a listbox?

Hi there everyone! I was wondering if there was a way to click the first item at the top of a listbox called gamelist as if I clicked it with a mouse.

I know the item index is 0, but would anyone know how to "fake a click" with the top item?

Once the item is "clicked", then I would like to call the gamelist_click sub. :)

Thank you for your help!!