I would like to put the top panel in the left. It would became a more beautiful thing if I could change the "Application", "Places" and "System" menus texts by 3 icons. Is it possible? How?
No, that's not possible.
As an alternative, you can right click the panel, select "Add to Panel" and choose "Main Menu" to get a single icon, containing the Applications menu as well as places and system:
It is possible to change those labels to icons. You would need to make small adaptations to the source code, recompile the
The source code for
So, the steps are
Perform the above steps first by changing the label 'Applications' to something like 'MyApplications;-)' so that you can see this process works for you.
You can return back to the original Ubuntu packages by performing a system update. Quite painless. Good luck!