Need help with Flash

So I've recently installed Quicktime and it totally eff'd up my ability to view Flash through Firefox. Before I had it installed, there'd be no quicktime loader, even though I had quicktime. It'd be default loading, or something. So I uninstalled Quicktime and tried that, it didn't work. I installed an older version of Quicktime, no go. All of these trials were also done with Internet Explorer and I've had success. Also, I've changed Quicktimes MIME setting's to not view Flash files(.swf). When I turn it on, it's run through IE, when I turn it off, it's off on IE but not firefox.

It's a major inconvenience for me to go through IE to view flash files. :( Please help me out. Thank you.