MySQL version?

I was wondering what version of MySQL dreamhost was using? I was setting up a phpbb board and was asked to enter the Database Type. I set up the database from the panel.

MySQL 3.x
MySQL 4.x
PostgreSQL 7.x
MS SQL Server 7/2000
MS Access (ODBC)
MS SQL Server (ODBC)

Those were the options I was given. Not sure if there are different versions on different servers. I was also wondering what the difference would be if I had the server port at 80 or would I enter 21?

3.23.54 on the server.
3.23.49 on most machines for the client.