Urgent: jdbc connection to PostGRESQL

["Linux List " <linux-prog@xxxxxxxxx>]

hi all,
   I tried the jdbc connection to the PostGRESQL server.
The HOWTO says that u will have a file called Postgresql.jar
,which you have to export to ur classpath.
I didn't find such a file anywhere in my installation.
When i run the program i get an exception that the 
driver is not found but the docs says u do have a driver
shipped with the PostGresql package.
I installed all the postgresql packages(jdbc,perl,phython,tcl,etc).Also
i found the
perl example working very well.
Any pointers,help.
Thanx in advance
vinu