This is how my menu looks like now, THANKS!

I attached a zip file with the icons.
The icons are taken from the N900 shared hildon icon folder.

I also added a transparent icon. Just add an app in it to make it appear. Just use a space as the name of the icon.

Note: If you want to add a second transparent icon, you need to give it a different name, you can bypass this problem by giving it "2 spaces" as a name, and so on..

I've done it 8 times now which gave me this result:
(I like the portrait mode how the last icons only shows the half, which means you know that you can scroll down for more)