If I ask too many questions, don't reply. :)

I'm working on getting my van ready to paint. My brother is going to brush
paint the van (he's an "artist") using touch-up paint provided by a friend
in the body-shop business who is going to spray a clear coat on after the
paint job.

My job is to take care of the rust. And there is lots of rust. Every seam,
it seems, is rusted. (http://www.spurgin.net/images/van/DCP_0095.JPG) I've
removed the old trim and every rivet hole is rusted as well as underneath
almost every window. (http://www.spurgin.net/images/van/DCP_0096.JPG)
(http://www.spurgin.net/images/van/DCP_0080s.JPG)

Right now I'm sanding down to the bare metal around every rivet hole and
every little nick in the paint that has rust under it and then feathering
and priming with spray Rustoleum primer.
(http://www.spurgin.net/images/van/DCP_0072.JPG)

My question is what to do about the rust in the seams and under the
windows? I know any rust at all is BAD but I don't believe this warrants
pulling all the panels and having them sandblasted. Is this the only way?

Oh yeah, and ETKA? Can someone give me a link? I'm lost on what this
resource is that is mentioned so often.

TIA
Dylan
81 Westy
spurgin.net/westy1.htm