Spliter Control ?

hi
i'm looking for a spliter ocx control. i prefere a Microsoft ocx but will be glad to get info about 3th party too.
the spliter should be helpfull by dividing a form into small containers (in the containers there are other ocx like grid and stuff). of course i need the spliter borders to be moveble.

thanks!

VB.NET has a build in splitter control. It's sweet!