As the nation prepares to mark the eighth anniversary of the Sept. 11 attacks, plans for a memorial museum are being fine-tuned.

Planners say the 9/11 Memorial Museum will itself be an exhibit, with materials from the World Trade Center site being used during construction. Museum planners have also launched a Web site where people can submit amateur video and pictures capturing their account of 9/11.

The museum is expected to be 70 feet underground, and while most of the steel beams are in place, it isn't set to open until 2012.

To watch the presentation for the new design of the 9/11 Memorial Museum, go to channel 612 on your digital cable box and select iO Extra.