iCal email alerts
How can I get iCal to use Thunderbird instead of Mail.app? I looked in iCal>Preferences but nothing there.
Active: iMac (G5, G4), PB G4, iPad, iPhone, iPod, MP2100 Retired: iMac G3, A2c, Mac OS X (10.5.8), Mac OS 10.4.11, Mac OS 9.2.2, iPhone OS 3.2 & 3.1.3, Newton OS 2.1