I've been trying to hook my Dad up with iChat this week. He's running a 20" Intel CD iMac with iSight. However, when he clicks on iChat, it bounces once and doesn't open. His software is fully up to date, everything else is running fine. Is there any way to try fix it without going through a reinstallation? I can't find anywhere to re-download the app itself because it only comes with Tiger discs, plus I live on another continent so can't go round there. We've got round the problem using Skype for video chats, but picture quality is definitely a little ropey compared to some of the iChat video calls I've had with other friends. Has anyone got any suggestions? I was thinking about recommending Pacifist but I'm not sure it would work and it's a little complex for a learner.