which is better to use if i would like to play games from iso files from my harddrive? Ive been using daemon ( which is a freeware ) but i found that i cannot emulate a couple of games ie: warcraft 3, diablo 2 lod. does alcohol have any better emulators? will it run ALL games?

If you are playing from images then you shouldn't need emulation. Daemon-Tools as far as I know should be able to emulate the securom on both wc3 and d2 lod as well as all other securom versions.

Daemon-Tools and Alcohol should be very similar in functionallity as I believe VeNoM386 helped out with Alcohol.