You can change the font size.
Start > Settings > System Tab > Screen > Text Size Tab.
That will change most of the text larger or smaller.
Thanks, Clear... I did that already, and maxed that out within the first five minutes of using the phone.
I'm going to try the ING change posted by smrtdb. Hopefully it will change all sytem font sizes.
Right now the worst part of the fonts being so small is when you have an incoming call and the name and number pops up. It's barely readable especially if you are driving or walking.