J3 Postings

Hi,

J3 posts some amazing stuff, but I need some help to view it.

First of all, on my normal newsserver, about 32 out of every 35 files were
missing. So I went to a pay newsserver (Agent). And I changed to Agent's
newsreader.

I then chose to download 'Nasa Project Mercury Pics part01.rar" This was
composed of 35 postings which Agent combined and downloaded. That was about
15meg. Now my understanding of .rar is that one needs all the parts to view
the pictures. Sure enough, when I tried to open it, it asked for part 2.
So I downloaded part 2. Another ~15meg. As far as I can see there are 18
parts?

Is this correct? Then I see that there are Vol1, etc for the same series.
If there are 18 parts, do I have to download 18 X 15 = 270meg? Is this how
much I have to download to see the pictures? I asked this earlier and was
branded a winger. But I really need to know. I have a 12G download limit
per month, so I need to be aware of what is available versus what I can use
my download allowance on.

Is there someone that understands J3 postings who will attempt to answer my
questions?

I am comfortable with yEnc and .rar files.

Regards
Doug