Skin the tooltip's tooltip window

[JuggaloBrotha]

Does anyone know if it's possible to skin the tooltip window so it looks like:
View attachment 2448
Instead of the yellow box or the balloon like it does now?

 

[MattP]

Found a couple of articles that may get you pointed in the right direction:

Balloon Tips Galore! - CodeProject

VS Style Tooltips and A Whole Lot More... - CodeProject