mySQL uses a very different database schema to Access and SQL Server.
The Access and SQL Server versions use a very similar relation database schema, however, mySQL is completely different as it is not a relational database and doesn't have many of the data types that Access and SQL Server have.
My advice would be to use MS Access's upsize tool to upsize your Access database to SQL Server.
If you are using your own server then the free SQL Server 2005 Express is brilliant for running Web Wiz Forums.
If you don't have your own server then we do some very reasonable hosting packages from as little as £4.99 per month which include the full version of SQL Server 2005. They also include the latest Premium Edition for free and we can even help by migrating your Access database to SQL Server for you. For more info see
www.webwiz.net/webhosting