Oracle can handle these Large Objects (LOBs) in the Binary Large Object (BLOB) datatype. BLOBs can hold movies, music clips, pictures, or any other binary data.
To learn how to code your Visual Basic application, I would recommend that you read through the Oracle® Database Application Developer's Guide - Large Objects documentation. You can find a copy of this document at the following URL:http://download-west.oracle.com/docs/cd/B14117_01/appdev.101/b10796/toc.htm
Chapter 6 includes a section titled "Using Visual Basic (Oracle Objects for OLE (OO4O)) to Work with LOBs". Chapter 14 includes more Visual Basic specific information. I would recommend reading as much of the chapter as you can though.