Is there any way to migrate existing intranet into SharePoint?

Hi,

I have currently an intranet sites for hosting data for users to retrieve from. I have a SQL Server and IIS run on the same box. My organisation is planning to use SharePoint soon so I must prepare how to move those intranet sites to SharePoint.

Is there a way to do that?

I have also wanted to develop request forms and use sharepoint workflow to route the approval to the require person when save it. Is there any tool that help me to do that?

Regards

SAM