connection pooling for postgresql in weblogic

Hi,
I want to set the connection pool for PostgreSQL7.1.1 in weblogic6.1
While creating a connection pool in weblogic it asks for URL & jdbc driver;
Foll values are passed:
Driver :jdbc:postgresql://172.17.72.110:5432/anaj
where:
172.17.72.110 host name
anaj database name
URL : org.postgresql.Driver

It's not able to find the driver
and hence does not create the connection pool. Please help me out with this,
an' also check if the values which I'm passing are correct.
Please reply ASAP.

thanx,
-----------anjali

Pledge your support to World Computer Literacy Day on December 2, 2001 by
clicking on http://www.worldcomputerliteracy.net
___________________NOTICE____________________________
This electronic mail transmission contains confidential information intended
only for the person(s) named. Any use, distribution, copying or disclosure
by any other person is strictly prohibited. If you received this
transmission in error, please notify the sender by reply e-mail and then
destroy the message. Opinions, conclusions, and other information in this
message that do not relate to the official business of NIIT shall be
understood to be neither given nor endorsed by NIIT When addressed to NIIT
clients, any information contained in this e-mail is subject to the terms
and conditions in the governing client contract.