ok first of all im kinda a noob a this so i dont realy no what is a "daemon tool"
Well normally I try not to make the assumption the one asking the question is not capable of figure out simple things. That being said 9 times out of ten, if you Google something you will get your answer. So try it, and go to the first hit you get. This is a must have program for any 'noob' or experienced emulation fan. It will allow you to mount a cd image to a virtual drive.
2nd let me rearange my words all i did is download the game and the emulator, so the real question is, how do i play the game?
I have not used the 3d0 emulator, but I would guess there is a load game menu or like. If you dont see load iso, then you must first mount it with deamon tools.
Again.. a little bit of info woudl help here, you never mentioned the name of the emulators?
psx) assuming you are using epsxe, you just run it, do a file -> "run iso" and point to your iso file. thats really not hard, so I'm going to guess there is more to your problem.
maybe this will help speed things up.
1) are you getting an error - what is it ?
2) do you have an iso, bin/cue, or other file? ( please tell me its not a rar )
3) what emulators are you using
4) mac or ibm clone ?
lets start there,