I just got a dual monitor setup and changed a lot of my setup, so I need some help.

I have headphones with very long and very coiled wires. Is there an easy way to straighten the wires out? If not, what wireless headphones would you recommend?

Is there a cord that can change A/V cables (red,white,yellow) to a vga cable? I need it to plug my other systems into my monitor.

Also, I have two different types of monitors, but I'm pretty sure they're the same ratio (1920x1080), However, one of the monitors always has a black border around it. If I try changing the first monitor to become the main monitor, then the second one has that problem. I went into screen resolution in windows 7 and both of them are using the highest possible resolution (1920x1080 again).

If anybody has any answers to these questions, I would be grateful.