The RNC didn't give us McCain as the nominee, Republican primary voters did that because there were so many candidates this year that conservative votes were split. It's just the way it happened, and we have to decide what to do with it.
Maybe you should read up on what the process actually is. As a matter of fact, some of these critical primaries were "open" primaries, meaning that liberals got to choose our candidates for us. That should never have happened. Moreover, the die was cast after just a few small, but liberal-leaning states held their primaries. The vast majority of us--the other 44 or so states--didn't have a say in who the candidate was going to be until well after most had been eliminated in those early primaries.
As for deciding what to do with what's left--I already have. I won't vote for a DemocRAT, even if he's wearing Republican clothing. I'll vote for good local people, but the President box will have to remain empty this year. And it's the FIRST year, EVER, that I've even considered doing such a thing.
But my conscience won't allow me to vote for someone I fully believe is unqualified for the office of President, even if he does claim to be a Republican. (But note: Republican is not the same as conservative, and lately, Republicans aren't very conservative.) Voting for McCain now just encourages the RNC to put forth more liberals just like him. No thanks.