Sure, it's all in the forumhome template. The code you refer to, is located in the.....
<!-- text -->
xxx[bunch of code]xxx
<!-- /text -->
part of the template, just move it into whichever part of the
<!-- welcomepanel -->
xxx[bunch of code]xxx
<!-- /welcomepanel -->
you want it to be in.
In answer to your other question about having the welcomepanel at the bottom, yes just move all the....
<!-- welcomepanel -->
xxx[bunch of code]xxx
<!-- /welcomepanel -->
code so it is underneath the..
<!-- /main -->
part of the template. It's dead easy