Schema file is not necessary. You may pursue if you desire; however, since you will be performing an Append Query anyway, you may adjust structure at that point. More importantly you will need the following references in your VB project:

Microsoft ActiveX Data Object 2.6 Library
Microsoft ADO Ext. 2.6 for DDL & Security

MDAC 2.6 may be downloaded from http://www.microsoft.com/data/download_260rtm.htm