Glassfish Problems

Problem
Glassfish requires posgres jdbc driver to connect posgresql.
Errors:
Message ID: test.connection.pool.failed
Complete Message RAR8054: Exception while creating an unpooled [test] connection for pool [ Mp3Core ], Class name is wrong or classpath is not set for : org.postgresql.ds.PGSimpleDataSource. 
Solution:
Copied these files:

postgresql-9.2-1003.jdbc3.jar 

postgresql-9.2-1003.jdbc4.jar

into GlassFish_Server_rootdir/glassfish/domains/domain1/lib.