PS2 emulation?

[The Bishop]

First, is there a working emulator for PS2 for the PC? I have found 2, one by MicahSoft and one from EKaf.

When I create a cd from the back up image (bin and cue) of the game, I see several file types: .IRX, .IMG, .15, and .CNF

One of the emulators (EKaf) instructs me to point to the .PS2 file on my CD. The other emulator auto detects the CD, but gives me an error reading CD.

So the questions are:

Do I need to burn my backup to a DVD? or is CDR sufficient?
From the description, is my backup image ok, or do I need to create a new image from the original.