How do you figure out how long it will take to pay off your mortgage?

I have a 30 year fixed rate 5.75% mortgage for 2,000. My payments began in March 2006. I am paying it off aggressively and to date owe 3,000. My monthly payments are roughly ,000 but I’ve been paying almost double that each month. If I keep up at this rate (and maybe even more each [...] http://bit.ly/nIubUk