Please be aware that a lot of what you read and what you saw was pure propaganda. It is very reasonable that you, or anyone else, whose sole source of information about the conflict was what they saw reported in the media, might believe that Serbia is in the "wrong". Unfortunately, the vast majority of that information was deliberate distortions.
You mention that you're not an expert in Yugoslavian history. That too is one of the reasons that distortions about the current situation have been able to propagate so easily. Without the context of history, this conflict would seem like a civil war (which it is not).
The truth is pretty simple. Kosovo is part of Serbia, but over centuries has been "ethnically cleansed" of Serbs and repopulated (in several waves by the Ottoman Turks, the Nazis, and the Communists) by muslims. Now, after the latest conflict (started by a group of terrorists with DIRECT ties to Osama bin Laden; their #2 is the brother of his #2) the Serbian population in Kosovo is less than 10%. Since they are now the overwhelming majority, they believe they have a right to claim it as their own. Unfortunately for the Serbs, our state department agrees with them.
Nice summation.
You seem to have a good sense of the situation. I would add that Milosovic stood up to ‘muslim terrorists’ grabbing land and he got sent to the Hague to die for it. The propaganda machine surrounding that whole affair was quite effective no doubt.