How to start CUPS at bootup

[antara scales]

After installing Mac OS 10.4.10 I couldn't add printers. After much searching, I realized cups was not active, so I found a Unix code and typed it into terminal. this allowed me to add printer==but===If I reboot computer, Cups doesn't startup and I have to insert code all over again.
Anyone know the terminal commands to get Cups to automatically start at bootup? I'm not very Unix smart, so go slow, please.
thanks,
Antara