I have a 92 Cavalier LS and i am planning on putting on a few decals but the plastic trim thingies that go around my car midway down. Are these attatched by adhesive or by other means. ANy advise would be appreciated.

Adhesive..You can pull them off, but you'll prolly have to do a lotta grinding where the trim was as it tends to leave behind pieces of itself that just do not wanna come off easily. Plan on repainting at least the area where the trim was.
I just left the trim on mine and repainted it to match the car's color scheme. Somehow I think the car would look strange without the beltline trim...

I removed the ones one my 94 ragtop. Just get some solvent to clean up the "after residue" and wax afterwards. You might have to polish a little. mine came right off with little effort.

yea as posted before in another post use a fishing line or something and work it back and forth then an adheisive remover and then use a rubbing compound and buff it out should look fine.