Take a look at
Miraserver. The current version doesn't connect to VB 3.x, but the next version (due real soon now) will. Build your main pages there, and just link into the VB system later. I don't know if the next version will support VB access masks specifically, so if you need some type of screening for users to readers to have access to specific sections of articles it may not (or it may, who knows?) do the trick.
We're developing on a current version of Mira so that when the VB3 compatible version ships we can just do an upgrade and be ready to go.