For my most recent project I needed a tooltip to appear when I hovered over some images that I was using as a button for various macros. Nothing out there seemed to do what I wanted so I had to hack something together myself. Attached is the fruit of my labour and I hope it will help somebody else in the future.
It's a pretty basic demo of what I ended up using. Uses activeX labels to achieve the mouse over effect which could also clickable so you can fire macros using them too.