Can't see any text in iTunes

Hi,

i've upgraded itunes to last version, 10.0.1.12 , installed on a Windows system.

When i run it, i can't see any letter in itunes, and also i can't see the menu (file,and so on..), only i can see it with the keyboard, (for example, Alt+a, and so on).

You can see my iTunes in this pictues from my laptop:

Does anybody konws a solution for this problem?.

This happens whem i connect my iphone 3gs and a 3rd generation Ipod.

Also sorry if i've expressed something wrong, english is not my usual language! :-))

Thanks!