[slightly offtopic] My favorite was from when PSX emus were just starting. Someone asked "How do I play a PSX game on my PC? Do I stick the CD in my CD drive?"
The reply: "No, you crack the disc in half, and stuff it in your floppy drive." [/slightly offtopic]
As for GC ISOs, yah, they're pretty tough to make. In fact, toasty's method is the easiest I've heard yet, but I wouldn't put much hope in it working...