My chooser doesn't allow me to choose a port. Every time I try to enable a printer driver it tells me I must be connected to AppleTalk to use the driver. I have never used AppleTalk. This all happened when I upgraded to System 7.5.5. Nothing seems to work. Reinstalling 7.5, then 7.1... The bottom line is that I can't print. The printer is not recognized nor is the port. I can't seem to find any reason for the chooser not even a) giving me a port selection, or b) not even recognizing my printer description, or c) telling me I need AppleTalk to use my printer (Okidata 410 postscript printer) when I've never had it. What can I do?