Christina, glad you managed to sort out your FF3...
I did have FF3 but it kept crashing continuously (within a minute of opening) every single time I opened the browser... I disabled add-ons... uninstalled add-ons and whatever else... no difference. So eventually I gave up on it and re-downloaded FF2, which works fine for me. In fact I tend to use Opera far more than FF now simply because I've got used to it because I used it until I thought of getting FF2, whereas before I very rarely used it.