if you want to use a new system font you will need to :
1. install this utility to your phone
2. copy the font file (e.g. xxx.ttf ) to Storagewindowsfonts
3. edit the registry HKLMSystemGDISYSFNT change the value "nm" from nina to your new font name
You can look for fonts at your computer, stored in "C:WindowsFonts" (this is the path in any Windows Operating Systems. eg: 98, Me, XP, etc... where you can find fonts)
Your Phone must be connected to your PC via ActiveSync to copy your selected font to your phone. Right-click selected font and select copy then browse/explore your phone using Windows Explorer and go to this directory "Storagewindowsfonts", Right-click then select paste... you should be done copying the font to your phone now.
To edit the registry, "PHM Registry Editor" should be installed on your phone. just search google for PHM Registry editor for download.
To install a .CAB file to your phone, copy the file to your phone first. it should be from your PC to your phone. copy it to "StorageWindowsStartMenuAccessories". You should be able to see the .CAB file from your phone at the accessories folder on your Menu. Select it and it will automatically install.
edit the registry HKLMSystemGDISYSFNT change the value "nm" from nina to your new font name.
Font Name is different from the font's file name. eg: Font Name "Bank Gothic Md BT", Font FileName "bankgoth.ttf"
i use Microsoft Word to check for the fonts that look good, if i have selected the font for my phone, ex: "Bank Gothic Md BT", i will look for it at "C:WindowsFonts". the font's filename will be bankgoth.ttf. in editing the registry of your phone, replace Nina with "Font Name" and NOT with the font's file name.
that should do it!!! i hope this helps...
Peace Out! 8)