The OMAP releases of Linux are not designed for N900. They are just designed to work with the OMAP3 (or 4) cpu. Nothing more. The rest is up to the hackers/devs of said community to workout (Like Mohammad AG did with Ubuntu 9.xx).

You say you have copied the files, but what kernel and how are you trying to boot the kernel??

You have ran Meego, uboot might not be compatible with this.
Take the kernel from /boot/ on the SD and try boot using Multiboot.
List the steps taken to extract and boot that you have done.

This thread seems very messy...