I have a 1995 Buick Park Avenue Ultra with the Supercharger. Is it easy to replace the spark plugs? Can I do this in my garage, or do i need special tools? My Buick PAU has 180000 and running great, had to work on the climate control a little, and the water pump, but otherwise it has been a very good car. One other question, I have never replaced spark plugs in a car before, are there certain plus that i should use or are they all the same?

Any Response would be great.

It is relatively easy to replace the plugs.
Hint: On the back plugs, remove the struct tower bar.

If you can handle the W/P, you can definately handle the plugs. Just be careful on the initial strain on loosening them, if they've been there a while they don't like to come loose and, well, things can get ugly. When you put the plugs in, put a dab of anti-sieze on them to make the next time a little easier.