My two cents (worth about a penny and a half at most 🙂 ):

Make sure you learn as much as you can about each possible job regarding how specialized it is. As you may already know, if an employer is looking for a specialized production DBA, they will welcome T-SQL and reporting skills but will probably be looking for you to primarily use other skills - backup, monitoring, performance tuning work, migrating or installing systems, etc. And vice versa if they are looking for a SQL developer and already have a person specializing in the production DBA stuff.

I also agree with those who've suggested looking at the exams and certification descriptions. Those will tell you what kind of work falls into what category, and whether you want to go down that path. If there's one thing I've learned as a (maturing) DBA, it's that it is almost never 100 percent one thing - as others have said, it might be 75/25 or even 50/50. But at least by knowing the way the specialties are being broken down you will be better informed about what the positions are describing, reading between the lines if the ad is unclear or even preparing you to ask the employer about the tasks involved if necessary.

Best of luck - this is a tough field but never, ever boring and potentially quite rewarding - intellectually as least as much as financially.

- webrunner

P.S. Also check out these sites in addition to SQL Server Central:

Simple-Talk SQL

http://www.simple-talk.com/sql/

SQL Server Performance.com

http://www.sql-server-performance.com/

MS SQL Tips

http://www.mssqltips.com/