Airport Extreme and 1TB Hardrive

How do i see my 1tb hardrive on the network once it is on my airport extreme? I can see it in the airport utility but not on any computer?

My guess plug it into a mac first and see what format it is.

Try changing it to MacOSX Extended if it is not already

BE WARNED THIS WILL WIPE ANY DATA ON THE DRIVE, IF THERE IS ANY