Hi all again

I have googled this and goner on wiki however can someone give me a smaller and easier explanation what a memory dump is and what exactly is does.

Also the properities in XP

Right click My Computer > Advanced > Startup and recovery.

I see small memory dump, kernel and core etc etc.

What settings do I use and what are the different ones for?

I know there is google but I trust the people here

Thanks for the time.