Most likely it`s one of the following:
-Check your Windows Font settings (are you on Win 7?) - make sure they are small or medium, large fonts can cause this problem.
-Check if you have latest Direct X drivers and latest Microsoft .net framework
If that doesn`t help, here`s couple of questions for you:
-What language is your Windows - English?
-What is your video card model
-Can you please open main Dawn of Fantasy folder, look up Log1.txt file and either post it here (using Attachment Manager - u can see it when u reply), or e-mail it to email@example.com
. With this file we should be able to fix this for sure.