Multi level navigation

[caviar]

Ok i've downloaded the plugin beadcrumbs here
http://www.box.net/shared/yl8xad06c8

it works ...
but... This is not exactly that I would like...

I just need a plugin which generate ONLY the sub menu

for example...

The main menu is "HOME | PRODUCTS | CONTACT"
AND The sub menu of the PRODUCTS page is
"PRODUCT 1 | PRODUCT 2 | PRODUCT 3"

That I would like to have :

when I click PRODUCTS link on the main menu
The page PRODUCTS is loaded
and on the left the SUB MENU appears
PRODUCT 1
PRODUCT 2
PRODUCT 3

If i click PRODUCT 1
the page is loaded
and on the left I havt the submenu again
PRODUCT 1
PRODUCT 2
PRODUCT 3

do you understand ...
I'ts just a standard navigation with 2 levels ...