Hi KW802,
I've got a whole script written in vb.net as windows app.
Basically what it does, it gives you a list of newsgroups. You can select those you want to sync.
It gets all the messages and feeds them into mysql database.
You can see this script working here:
www.n-n-a.com .
It should be very easy to feed it into vb.net forum.
First of all, it's extremely fast. It gives you progress in percentage for each newsgroup and I can pull millions of posts a day.
Do you want to give me some helping hand to get it to work with vbulletin?
Joe