iWeb -- can you only do one level of page hierarchy?

Hi,

I am thinking about redoing my website with iWeb. However, it looks like only one level of navigational hierarchy is supported. I need to have at least two -- for example, I want a 'Software' tab at the top of the screen, but from that page I want to be able to go to three or four different software projects, each with their own page. I don't want those project pages to appear at the top of the screen, though.

I can sort of work around it if I make the 'Software' page a 'my albums' page, because it has its own mini-list of albums within the page. But I don't necessarily want photo albums on there, so it is awkward.

Is there a way to do what I want with iWeb?
Thanks!
Bob