ADP connection to SQL

I would like any advice on connecting an Access Project to SQL Server 2000. Authentication is in mixed mode and user enter a name and password. When he click cancel twice, it will appear error - he enter without check a name and password. How I can prevent that?Any chance of changing the authentication to Windows only?|||

I don't understand what is happening in your scenario - can you explain with more details how you set up your project to connect to SQL Server?

Thanks
Laurentiu