I am a VB beginner and am having problems with the Listbox.

I have a listbox with ID no's and Names.I want to be able to search for the ID or Name. When the user types in the name or ID into a textbox and clicks on the find button, I want the corresponding ID or name in the Listbox to be selected.
I have spent sooo much time on this and just can't seem to get it working.

Can anybody help me, please