I want to fix the rattling plastic in my 2 y.o. Protege. I've got a
suggestion to
remove the plastic door covers and reattach them using some silicone
compound.

What stuff do you recommend to get (I'm in the US) and do you have any other
suggestions
on prepping the car? I want the stereo to stop making unwanted special
effects.
Are there good websites with the info on this? What should I google for?

Should I have a professional installer to take care of this issue? If so how
much do these services
typically cost?

Thank you.