Hi,
there are many challenges in order to change the back-end, these are some of the changes from top of my mind
- you need to manually import existing database to MySQL (this will require a lot of schema changes because of the different data types)
- you will need to switch the ASP.NET membership providers (
http://dev.mysql.com/doc/connector-net/en/connector-net-programming-asp-provider.html)
- you will need to import and rewrite the ASP.NET membership stored procedures (
http://blog.winhost.com/creating-asp-net-membership-tables-in-a-mysql-database/)
- you will need to regenerate the LLBLGen project to use MySQL DataAdapters
- etc.
Regards