Application with barcodes

Hi, I am developing a demo of an application which uses barcodes, but I'm running into the following problems: 1. The gd library's compiled with SuSE 7.3 Pro version of PHP 4.06 doesn't support TTF so I have to install Postcript fonts (it does support Type 1), and I really don't know where I should install them and which barcode font is better to use. 2. My application runs under a PostNuke enabled site so I can't just recompile the gd library and php to make TTF available, I'm afraid it will mess up a whole working system ! 3. The barcode will be printed over an image gif ? jpeg ? which ones works better ? Since this my first app with barcode, any advise from seasoned users it's very welcome. 3. TIA, Ricardo Fitzgerald Web Developer ICQ# 37031810