that sounds very very dodgy!!!
However, if you look at the profile button below each persons post you'll be taken to a screen like this
http://computerforums.org/member.php?u=2390, you'll notice that the last part of the URL is specific to each user, so you can get details of a user just by knowing theirnumber,
What you should do is write a PHP script that parses the infomation, strt from 1 and increment the user number.
Without access to the database this is the only likely way of doing this.
If/When you do this remember that there is a time-out on checking out user profiles, so you're script will have to pause for long waits between each user.
you are user 2390, so if you only searched up to your number you'd get all the accounts registered before the 10th august this year,
You have to wait 5 seconds (I think) between user searches, so to get all the addressess it will take just over three hours.
the default time-out on most PHP servers is 60 seconds, (if a script takes longer it is assumed to have somehow crashed, or awaiting a process that has crashed).
So you have the choice of incrementing the addresses in blocks of 10, (upto however many thousand users are registered.)
or Launching the 'detail scraping' attack from your own server.
I'll assume that following your post, David, or any otherserver admins would be wise to be looking out for log entries, parseing the entire database, and the appropriate action would be taken,
this ties in with the second question.
You could just edit the original email to cut out the addersses, unless the list carries some kind of check figure there will be no way to verify the original list.
however,
I'll assume that you are in the business, or trying to make the trade in addresses your business.
firstly,
Falsifying any sort of buiness document is illeagal,
secondly, the trading of email addresses, without consent of either the owners of the address, (or the owner of the address books), is also illegal.
so whilst your idea is perfectly feasible, (and I've told you how to do it), practically it's something that you shouldn't do.