Go to the room that has the Lava Seahorses, and the missles in the top left with the green gate right by it. Make sure you have the Icebeam and the Highjump boots. If you go to the top right, there will be a spider-like monster that jumps around. Lure him over to the missles, and at the peak of his jump, freeze him. Now have Samus jump and try to wall jump off of him. If you can't reach, then lure him a bit more to the right or left and try again. I don't recommend doing this, as the grapple beam is the next item you'll get and this is very hard to do.
Submitted by: Thor