Go to start, settings, control panel, display, appearance, effects (the button just over the advanced button on the lower right side), and change the Clear Type setting to standard if you are using a monitor other than an LCD - if you are using Windows XP. If not, find the equivalent in your operating system. Clear Type and True Type refer to two different things. I believe that True Type should display the same on the (CRT)monitor as on the printer. Clear Type maximizes the quality of display on non CRT displays.
If you already have it set properly - that is, you have a non-CRT monitor, then I suggest you download X-teq's tweaking utility which has a plug-in which allows one to adjust the settings within Clear Type (or CoolType).
Good luck and let us know how you solve the problem.