Help seeing hard drive via airport extreme

I'm trying view my hard drive from airport extreme.
I can see everythign when i connect it directly to my macbook, i've successfully connnected the printer and I see it in the list. I just can't figure out how to actually open the hard drive to access the files. I'm sure it's something simple. I'm neebie to the mac world, a co-worker said it's because it's ntfs but i can see and access everything if i connect it directly to my macbook.
a little help please.

System preferences > Sharing> Check File Sharing
Go to Finder and then look under shared it should be there.