PSX Gameshark Help

[Marspants]

I just recently found a PSX Gameshark at my local junk shop and I was wonder if any of you guys knew how to use it. Here's an image of what it looks like.
http://images.channeladvisor.com/Sell/S ... thinhy.jpg
I just have the part that hooks up to the port on original PSX's and I'm assuming it needs a CD or something to run with. Any ideas how to use it would be great, also if anyone knows where I could maybe download the CD ISO I'm assuming it needs that would be good.

[miked]

Haven't used one in years but as far as I remember no CD is needed. After its plugged in(and the switch is turned on.) it should just boot into the gameshark menu when you turn on your PSX.

[Marspants]

Haha your right! I never even noticed the switch. Thanks man

[deathred]

Hehe, i used to use those things to play backups on my old Playstation. I also used those to watch the FMV files on the discs.