reg:"Driver Not found-error"- need u r suggestions

hello sir,
When I am trying to connect my pgsql with jdbc, getConnection throws the exception "Driver not found for the URL jdbc:postgresql:testdb".
I am using the jdk 1.3.1 and my code goes like this
'Class.forName("org.postgresql.Driver");
Connection con = DriverManager.getConnection("jdbc:postgresql:testdb","root","passwd");
here
"testdb" refers to database name,
"root" refers to username and
"passwd" refers to userpassword.
I had tried with these following jdbc drivers pg72jdbc1.jar,pg73jdbc2.jar,pg72jdbc2.jar from
postgresql.org (postgresql jdbc downloads.htm).I had tried each one of these drivers by setting one in the classpath.
I hope u can help me to fix this error.
thankyou.
with regards:
Rajesh Kumar.

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