Just undo all the bolts, there is one at the bottom that you have to open the door to see and a couple underneath at the back of the wing. (on a square headlamp version)
The headlamp kind of clips into the wing as well, just pull that off. Front bumper needs to come off.
Some seam sealant in places (nearest the bulkhead) which I found a scraper pushed in will release.
All above is for square headlamp version, don't know about others.
As for painting the rust bits, once it is cleaned up wipe a rag of Kurust over it and let dry before doing the paint. Don't use a brush to apply the Kurust as it just makes a mess. Don't get it on your hands either unless you want purple hands.
The headlamp kind of clips into the wing as well, just pull that off. Front bumper needs to come off.
Some seam sealant in places (nearest the bulkhead) which I found a scraper pushed in will release.
All above is for square headlamp version, don't know about others.
As for painting the rust bits, once it is cleaned up wipe a rag of Kurust over it and let dry before doing the paint. Don't use a brush to apply the Kurust as it just makes a mess. Don't get it on your hands either unless you want purple hands.