Firstly, make sure you are running the display at it's native resolution. If you need to know how to do this reply and i or someone else will talk you through it.
Secondly, enable clear type and see if that helps.
Right click anywhere on your desktop and choose Properties
Select the Appearance Tab
Click the Effects button.
Tick the "Use the following to smooth edges of screen fonts" then in the drop down box, choose "Clear Type"
Then OK back to the desktop, and see if that is any better.