no offense, but arial is a crappy font -- a MS cheap imitation rip-off of helvetica. if you compare it to helvetica you can see that arial is poorly designed.
you can get the microsoft "core fonts" for linux, though, which comes with.verdana and i believe times new roman. just do a google, there's probably an rpm you can use. also try the Bitstream Vera
fonts -- they are really nice. [download