phpbb3 to vb suite, integrating with drupal member list

[Jennifer Dent]

Greetings all!

I will try to lay out what I need and hopefully it will be easy to understand.

I am the administrator of a phpbb3 forum with approx 9000 members. And a few custom mods (I'm aware they will have to be re-written for vb)

Our parent site is a drupal based site with many many many more members then that. Here is what I am looking to do:

1) Convert the phpbb 3 forum to vb suite (without losing threads and/or members)
2) Once converted to vb can my memberlist from both sites (vb and drupal) be integrated to a single log in? If so, how does it handle duplicate username entries?

Before suite came out we attempted to convert phpbb 3 to vb and lost the members for some odd reason and we were missing a ton of threads. Can you provide me with links/documentation that can help me with the above?

With over 9000 members and tens of thousands of posts you can see why I don't want to lose the members or their posting