Laser Pointer Forums - Discuss Laser Pointers | High Power Lasers

hello all, i was just wondering today, how to make a 3V - 6.4 V step-up circuit so i can make my ( soon to arrive ) DX labby slightly portable, can anyone help with what components i would need to build it, i know how to solder and stuff so i would have no bother putting it together, thanks for any help