I just received a pair of Ultegra brakes to replace my current setup on my road bike. I've never done this before, and I can't find an adequate guide online. Do I just disconnect the brakes, remove the old ones, slap the new ones on, stick cable back in? Do I need to replace the brake cables or can I use my current ones.

Also, how do I pull the brake cable out of the brake since there's a stopper at the end of the cable?