Leopard doesn't "see" printers

Ever since I installed Leopard (I have now updated to 10.5.4) my Dual 2.3 PowerPC G5 does not recognize that my printers (Epson 9800 firewire and an Epson 3800 ethernet) are connected to the computer. I have installed the latest drivers but cannot "add a printer" because they do not show up in the list and there is nothing to add. I can print to a wireless net printer but cannot SEE the ones that are actually hooked up.
 
sad I’m beyond frustrated!
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