I cannot print to a network printer attached to my router in Macintosh OS 9 or earlier.
Solution 2:
Internet Printing Protocol (IPP) is required to print from a Macintosh computer to a network printer attached to the router. IPP is not supported prior to Macintosh to OS X. Upgrade to Macintosh OS X and refer to Installing a USB Printer in a Macintosh OS X Environment.