So I tried to install vista on my mac. I started boot camp and inserted the Vista CD. For some reason it would not start the install. It kept staying in the white screen. I tried this three times by erasing the windows partition and starting over. So I gave up and went to install XP, which is what i originally had. The same thing happened. Before I installed OSX 10.5, my XP partition was fine. Ever since 10.5 it will not let me install either windows now. So I gave up for the time being. Now here is where my problem lies. I have to hold option to get to the my OS. I deleted the windows partition, but it still happens. When i turn the computer it just hangs on the white screen. Does anyone have a solution for this? Should reinstall 10.5? 
thanx in advance.
thanx in advance.