Is this class going to be the end of me?

So, last week I was so proud of myself for installing all of the requirements for "Getting Started:" Xmarks, Zotero, pittcat+ toolbar, etc., and today using my shiny new Firefox 3.6.3 browser I logged into Blackboard and attempted to watch the lecture from May 18th only to be prompted to install Silverlight. That really confused me, because I thought that once I had installed it that it would work in any browser (I mean clearly I've watched stuff on Blackboard using Silverlight before). Is it something that you just have to install with every new browser rather than just downloading it onto your computer? I was given two options: "Save" or "Cancel" and instructed to restart my browser. For obvious reasons, I clicked "Save," closed out of Firefox and then logged back into Blackboard in hopes of watching my lecture only to be served with the same message that I needed to install Silverlight. "I'll show you!" I thought, so I decided to bypass Firefox (just this one time) and logged in using IE8, which I have used previously to watch lectures. Well, guess what - IE8 was "Not Responding," so that was awesome, and I must have screamed some profanities or something, because my husband came running back the hall to the office to be of assistance. Lucky for me, he IS a techie and an applications developer by profession (bite me, Silverlight), and kindly instructed me that simply saving Silverlight, which -pardon my tangent- I erroneously referred to as an "application" (it's a web application framework, duh! Oh, and thanks Wikipedia for ending our argument and proving him right), isn't enough to actually make it work. Apparently, there's this little step called "Run" that Microsoft was so kindly keeping a secret from me, and it turns out that clicking "Run" is a fairly important step. I don't know where he found the window with the Run option; all I know is that I started this adventure at exactly 3 p.m. today, and it is now 53 minutes later, and I am finally getting ready to watch my lecture...