where can i get .chd files for MAME?

Question

For the game area51... i'm using mame v.111

Answer 1

Read this sight page first:
http://www.mameworld.net/easyemu/mameguide/mamechd.htm

Then use either eMule or Bit Torren
http://www.emule-project.net/home/perl/general.cgi?l=1
http://www.bittorrent.com/

Here is a sight for getting a gun for playing
http://www.play-asia.com/paOS-13-71-1i-49-en-15-topgun-70-16s7.html