Ah man.
Don't work for me.
I use the HDloader PS2 exploit, which allows me to browse my Memcard etc, and Elf's without a mod.
Tried putting it on the Memcard, and tried swapping the PS1 trigger disk with the burned disk, and still dosen't work.
Goes screwey when I load it from the memcard, and dosen't get rocognized on the disk (Even though I can access it)
Edit: Basically, I did what the dude above me did.