If you do end up lowering the bike this is what you wil need to do.
Front: Put the froks up higher in the triples to lower it. Make sure that you do one fork and then use the axle to match up the other fork. Be sure not to go to far and try not to use a strap to lower it farther. You could hurt the suspension by doing so. You could also damage the bodywork as well.
Rear: You will need to purchase lowering links. Make sure to measure how far you want to lower it as most lowering links will have different holes in them to allow to go lower.
Try to lower it in equal proportions. If you go down 1" in the front go down 1" in the rear and so on. Make sure to check the tightness of the chain after you lower the bike as the chain will get tighter when you lower the bike.
Another thing to watch is your kick stand... If you lower it more than 1" you will need to shorten it or buy one that is adjustable. Other wise the bike will be at risk to falling over the opposite way while sitting still.
When you lower a bike the geometry will change drastically, as most have already stated. Lowering the bike will make it less stable in the turns but more stable in a straight line, so be sure to watch those corners!