Could anyone please offer directions to the O'Hare Hotel Bus Shuttle Centre from the AA terminal (Terminal 3)?

Could anyone please offer directions to the O'Hare Hotel Bus Shuttle Centre from the AA terminal (Terminal 3)? I hear it's near Terminal 2 and is accessible via underground walkways. Is it clearly sign-posted?

TRB,

The shuttle center is an easy walk from the AA terminal and well posted with directions to get there.I was there last week and give your self some extra time as there is construction in the area.For more details hit the O,hare airport web site.

Thanks Robert!