The placement of the wiki-menu is dependent on the local configurations (css styles). I tried to make it reasonably well for out-of-the-box openacs and dotlrn. For local styles one has to adjust the placement in xowiki.css. Look in xowiki/www/resources/xowiki.css for
div.wiki-menu and
#wikicmds
and adjust it accordingly.
best regards
-gustaf neumnann