A bit visually impaired -- direction?

[niftygeek]

I've been playing with a friend who has trouble seeing things on the radar. His sight isn't that great even with glasses.

The radar is too small for him to find individual elements (like fellow lan gamers in his fellowship or a quest ring in the radar being too small).

From a brief look around I don't see any mods that are specific to enlarging the radar or enlarging different elements on it, or changing their colors.

I have no idea how difficult it is to modify the UI as I just found out about mods today.

Any input would be helpful. I'm a complete neophyte.