[Replicant]

That won't be easy to do. All posts, threads, forums, categories, attachments, photos, galleries, private messages......you get the idea, are stored in the node table. Everything in vb5 is considered content. It is possible to do refining the query by contenttype, but may not be full proof. Might I ask what exactly you are trying to accomplish?

The reason you can still puul the last 30 by postid in vbulletin on imported posts is because your old post table still exists.