Newbie needs advice

It's really hard to find specific information in this huge forum. Sorry if this has already been answered.

1. How can I find out what a panel's native resolution is? How can you use the pixel pitch to calculate this?

2. How can I find out a panel's response time? It never seems to be listed?

3. Will regular panels with the back removed work well on overhead projectors? Aren't there special optics for a panel's backlight?

4. Has anyone tried this panel? http://earthlcd.com/SK2005R.HTM

Thanks everyone. I'm sure these questions have already been discussed, but it's hard to search for anything here. If I do a search for "response time" for example, I'm gonna have hundreds of posts to search through.