Access 2003 (SQL Server 2000) migration to SQL Azure
If your back end is currently SQL 2000, then you need to do a dance to get this to work, but it should be fairly straightforward to do something as follows:


Spin up a VM in Windows Azure, using a template for SQL2008R2 (that's the oldest available template, I believe).
Take backup of your SQL2000 instance, restore it to the Azure VM instance you just created.
Using Visual Studio, create a new database project pointing to the new SQL2008 R2 database.
Change the properties of the project to be SQL Database as the target.
Fix all the errors.
Export/Import to your SQL Database instance.
Remove your Azure VM (unless you want to keep it, of course, but why pay for something you don't need?)


I have no idea how long this will take you to accomplish, but that's the general outline that should work.