people ask me how to change their font all the time. here is a cool little app that lets you change your font without overwriting you current font and lets you go back to original. now not all fonts look good or work with your Omnia you just have to try a few and see what works best for you. here are a couple that i found to look nice on my phone.
All credit goes to g77 over at XDA
http://forum.xda-developers.com/showthread.php?t=416325
instructions:
Download ppcChangeFont.zip put the .exe directly on your phone can be ran from storage card. Just copy your favorite fonts to a folder placed in the root and run ppcChangeFonts! Enjoy if you have questions just ask!
I have included the 3 fonts i used above ill add more as soon as i get done testing them all. if you get an error hit retry once and then hit abort until it says soft reset