I am new to a position. We run both 2000 SQL Server and just a few of us are on 2005 SQL Server. Hundreds of our customers are on 2000, just a few on 2005, but more migrating. My question is, which certification should I get if I had to get just one? How would the learning curve be for 2000 if I took 2005 study and tests and visa versa, if I took 2000 study and tests and applied that knowlege to 2005? I just want to become proficient in the work place and take only 1 certification if I can. Finally, since cash is tight, what's a good low cost or self-study system. All the best! Thanks, -George P.S. I am going to post this question in the SQL Server 2005 Certification forum as well.