Well i don’t know much about Artisteer because WordPress is not like iWeb or RappidWeaver where you can drag&drop to make your lay-out, If you would like to build or customize your lay-out you need some understanding of HTML , CSS and a bit PHP.
I’ve helped lots of people at the Dutch WordPress forums and most of them often had trouble with Artisteer because the software often didn’t supported some simple WordPress Codex.
I think it’s very strange we can’t touch the defaul $slug with a custom page template!
This is totally not WordPress like.
Now i have to offer my page.php (default page template) to bbPress and make sure when i draft a new page inside my Dashboard i use a different (custom) page template to prevent my lay-out from breaking..
I tested to following:
Dashboard > New Page > Name it HELP > pick my custom Page Template with the bbPress forums index inside it > Saved it and it works 100%.
I don’t know if it’s a bug or glitch but this is totally not the way to do so, because the default slug keeps showing up in the breadcrumbs.