rounded edges

i checked the memories and the post that was in there about this problem helped but i still need some.

how would you go about making an icon have rounded edges?

in the comments of this post: http://www.livejournal.com/community/icon_tutorial/272266.html it helps some but im still left with the part i tried to delete.

please help if you can. i use Photoshop 7.0.

Thanks.