basic prob

when connecting thro' JDBCODBC bridge i am getting following exception :

java.sql.SQLException: [Microsoft] [ODBC Driver Manager] Data source name not found and no default driver specified.

java.lang.NullPointerException

what should i do to rectify this and establish a connectivity to a .mdb file

[323 byte] By [deepikamallyaa] at [2007-11-27 6:12:32]