Assuming it IS the switch, which as somebody else pointed out may not be the case, as I recall, the hardest part of changing the switch was getting the crush can off. You need a puller that can fit inside the can...
Once that was off, it was simple.
Oh, and be sure to mark your crush can before you remove or your steering wheel will not be centered when you put it back on.
Don't ask me how I know this. :-)