Class name is wrong or classpath is not set

sorry I have only these points left

while i coded for ejb as usual there is not need for establishing a connection ...
So i go to admin console and set the connection.. i am using sql server 2000... while creating a connection in admin console, i tried to ping whether the connection is established or not ,, but i got the following error..
Would you please help me ....

error is :

An error has occurred.
Operation 'pingConnectionPool' failed in 'resources' Config Mbean. Target exception message: Class name is wrong or classpath is not set for : com.ddtek.jdbcx.sqlserver.SQLServerDataSource
Who is Participating?
Jim CakalicConnect With a Mentor Senior Developer/ArchitectCommented:
This means that the DataSource class you specified in the configuration cannot be found either because you entered the name wrong (probably not in this case) or the jar is not in the server classpath. Which application server are you using?
Forced accept.

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