First, Werner's message (above) is correct. You'll get much faster responses by posting your questions as a discussion rather than as a blog.
Second, unless I am not remembering correctly, there is no drawing tree in Wildfire 3.0. I believe the drawing tree appears for the first time in Wildfire 5.0 (aka Creo Elements/Pro 5). At Wildfire 2, 3, and 4 you only have a model tree.
I haven't used Wildfire 3 for about 2 1/2 years so I could be wrong. I just wiped out all old versions of Pro/E prior to Wildfire 5 so I cannot go back and take a look. I think you may be looking for an option that does not exist.