Since there is nt such importer tool it is normal
that it should be written to import all vBulletin data. Furthermore this is a PHP based forum and there is no straight way for this migration PHP to ASP.NET.There are many PHP based forums and it is hard to create some wrappers for all of them using any ASP.NET CMS on the market. vBulleting has many custom modules which functionality cannot be migrated easily or event cannot be converted to Sitefinity forums due to some limitations.
the Telerik team
Do you want to have your say when we set our development plans?
Do you want to know when a feature you care about is added or when a bug fixed?
Telerik Public Issue Tracking
system and vote to affect the priority of the items