I think you were meaning that you couldn't get the tools to lay up on the side on the MAC, like the traditional two columns of basic tools: Draw, Move, Measure, etc. on PC I re-installed Sketchup now now and was also confused about my toolbars.
found them again under >View >Tool Palettes >large tool set.
it has most the common ones leaving space on the top row for 'extra' icons. hope this helps, if it's what you were getting at.