Converting Older Theme to WP 3.0 (navigation/display issues)

I am using a custom designed template for a new site I am building:

http://seasonalchores.fp144.focalpointhosting.com/

I have used this template before on other sites: http://schmidtlawncare.com/

But for the new site I have installed WP 3.0.4 and two issues have come up right away:

1) The content entered in the Pages admin does not show up on the page (http://seasonalchores.fp144.focalpointhosting.com/about-us/) and is not visible in the source for the page.

2) The Navigation seems to be creating duplicate displays (About Us shows up twice).

I was wondering if anyone has experience with this and can point me in the right direction.

Thanks,

Joe