Unlock your iPhone!Joe Kramer - Director of Wireless Services
That being said, if you have the skills you can view steps 1 through 6 that Geohot and his team has posted on http://iphonejtag.blogspot.com/ . Thankfully he mentions in his Youtube video a simple software update in the works that will not require all of the hardware modifications. It will probably be worth the wait.
Youtube screenshot - T-Mobile is being used as the carrier!