I just configured Eclipse with PyDev latest version, but when I import external modules, neither code completion nor syntax highlighting works. How do I enable it?
Komodo Edit does a better synax highlighting, apparently. - But Ctrl+R doesnt run the program. 
I prefer a SciTE kind of editor with similar highlighting and fonts (aesthetics) and F5 working but with display of folder and files dynamically like Komodo Edit and a better code completion and vi emulation. Suggestions, please.
If I want to buy a Py IDE, Komodo or Wingware, which is better?-- Wrt syntax highlighting and code completion
The typical reason that code completion doesn't work under PyDev is that the libraries aren't in the PYTHONPATH.  If you go into the Project Properties, and setup PyDev PYTHONPATH preferences to include the places where the code you are trying to complete lives, it will work just fine...
Project > Properties > PyDev-PYTHONPAH >  click 'Add source folder'
No code completion and syntax highlighting in Pydev