OK I just found the address to Super H.
Super H mart is in Niles, 801 Civic Center Drive.
That place is huge.
And in searching for Super H I also found the address for another Asian mart,
Mitsuwa Marketplace
100 E Algonquin Road
Arlington Heights IL
Apparently Mitsuwa is more Japanese, whereas Super H is more Korean and Pan Asian (this I read on chowhound.com.
I know Super H has almost a whole aisle of nori and seaweed. FYI my fish don't seem to like the seaweed as much.