fix for web browser and other app resolution problems

[Mary Lou Jepsen]

>"The useful resolutions are 1200x900, 600x450, and 400x300. Simple integer
>scaling can cover all of these."

It may be better to allow user-adjustable increase and decrease of the font
size.  I'd personally prefer smaller fonts on the web browser, but children
often like/need large letters when they are first learning to read. Having
the user-choosable font size would allow this.  

For applications that are written for a certain resolution it would be nice
to allow a way for the application to fill our entire screen (it's small
enough as it is - it would be nice to fully use it).  

- Mary Lou