Macintosh

• SystemPreferences -> Print&Scan
• Click "+" on middle left
• (Lion only) Click "Add other printer or scanner"
• Near the top click "IP"
• In the "Address" line give suncat-hp3015 (black and white) and/or suncat-hp4025 (color)
• Click "Add"

Try to use the black and white printer when possible, to save money. Both printers can print full-duplex to save money/trees.