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My question to you is do I need to put the majority of my focus on Microsoft SQL Server or what languages are most and lest important to one who is trying to become a DBA?
If you're going to be interfacing with web sites in addition to DBA work, then it would be good to learn whatever languages you'll be working with on the web side. But more importantly you should focus on the SQL language (i.e., Transact-SQL for MS SQL) itself.
You also need a basic understanding of the mechanics of the DBMS that you are working with in order to deal with performance issues. Again there are a lot of basics with are true across platforms.
If you are designing complex databases yourself then an understanding of entity relationship modelling is needed.