Thanks so much for you help guys I am now running in 1440 x 900 and its looking good. Would have been stuck on that problem for ages
Don't hecitate to ask questions, that's a perfect use of forums.
It could also help others with same problem! If you are a new user I guess there will be tons of things you will want to ask as you explore the system!
There is also morphzone.org (where many of the OS developers and other experts hangs), IRC (#morphos @ irc.freenode.net) and of course the mailing list!