Hi Schwob,
I run 2011 office on my 1011 running 10.6.6, It does it without any problem, the only screen size issues is when the program launches and it gives you a choice of templates. the 'ok' button is out of the screen, you can easily disable this.
The one thinking I would say is that Office on Mac is a pretty clumsy program and isn't that quick to launch (just tried it, took 12s to launch with only Safari running but 2GB of Ram would go a long way to solving this).
Have you thought of using openoffice or scriviner instead?
Congrats on the posting!