I Want To Achieve This Effect

I saw this icon and I'm wondering how do I get that effect. I hope someone here can help me. Also, does anyone know how to create the effect that the current icon I'm using has? Any help would be appreciated. Thanks. Oh, I use both Photoshop and Paint Shop Pro so I'm fine with anything that works.



I don't know if I have to credit for this but anyway, the icon above was made by miracula.