christexaport: Start any complex program in your computer where it fits nicely with your screen resolution (complex in UI) now stare at it for 5 mins.
Now imagine how bad or how the visible area are going to be cut to fit it within half of that resolution.
You might consider blend or even open office as an examples for your wild imagination.

After all, I think this might even give a better idea about calling n900 Mobile Computer. & Trust me if you ever tried now days programs with 640x480 res you will feel the PAIN!

Using scroll as a solution wont be good & forcing many rules in the GUI won't support developers either.
I suggest you be happy with whats n900 can offer you