New laser module half-working

So this is my first time posting, and this is my second laser build.

I purchased a laser module on ebay recently. It is 445 nm and rated for an output of 4 watts. What I did not expect is the laser is a line, not a dot. I also did some testing with it, and it is not even close to burning paper, and it should. It can melt tape and pop balloons at close range. I am giving it 4.7 volts and 6 amps (no driver yet, I tried to make my own and failed.) and the seller said I should use a driver with an output of 4 amps or less.

I want to know if I can focus the laser to one point rather than how spread it is. The seller said it is a g-2 lens. I also want to know what driver to use. I have the driver from this:

200mW 532nm Green Laser Module (3V 11.9mm) - Free Shipping - DealExtreme

And was wondering if I could use one of these:

Adjustable current laser diode driver 80-500mA w/TTL blue board

EDIT: oops, second link os for 500 mA. OOps.

Upon further reasearch, I have concluded that I bought a rectangular diode. Can i use a lens to make this a dot, because if I can't I will return it for a different module.