There are three good solutions for this:
1. Use submenus. If you still can't fit, make more submenus. The main switchboard is thus filled with a bunch of links (precisely 8), which may link to further submenus, or may be populated with 'regular' switchboards. This is fine and acceptable.
2. Stop using the switchboard and start making your own menus. If you're doing a complicated enough application, you're going to need to do this eventually anyway (trust me, you will).
3. Go fancy and build your own Windows-style menus, e.g. your own 'File' menu, your own 'Help' menu, etc.