I've been trying to place kashyyyk trees with the single object placer and multi object placer but I can't get it to look right, how can I paut them in and what pieces do I need?

You need all the odfs, mshs, and tgas. How are you trying to put them in, and what is happening?

I copied the odf and msh files from assets/wolds/kas and whent into multi load, selected kas2_bldg_tree, kas2_bldg_tree_leaves, kas2_bldg_tree_top, and kas2_bldg_tree_branch. I've also tried it without the branch or leaves. It loads in al broken up and putting it together is hard.

I'm afraid that's the way the model comes: in parts. You can try putting it together (tiP; turn off GRID mode in the left-hand panel under the objects tab). Or you can try loading up the Kashyyyk world file, multi-selecting the whole tree, saving the group as a .obg file, copy the .obg file into your world's odf folder, and load the group in from there. Not sure if that'd work.

yes, that should work, although its obg, not obj, i think.