Attached Link: http://calyxa.best.vwh.net/~calyxa/pearl/miracle.html

I didn't think that it was dense enough, so I duplicated the whole group and rotated it 90 degrees. All that's left now is to choose a texture. This is a process invented by Calyxa called "miracle trees"; it was originally intended to provide support for trees in Bryce4, which didn't have a tree object. You can check out her original tutorial at the link (she's better at explaining things than I am). Sorry about the long string of posts and images. =) Hope this helps.