Please elaborate on your setup and situation greatly... "I'm using Tiger and I can't print wirelessly" is extremely vague and difficult to even begin to troubleshoot.
What kind of printer do you have? How is it connected to the network? USB? Ethernet? Wireless print server? What kind of machine are you using, and are you using an AirPort Extreme card or an older AirPort card? Have you ever been able to print sucessfully, or is this a recent complication?