Error in configuring JDBC adapter

hi i m newbie in webmethods. while configuring JDBC adapter for MS SQL server2000 i encountered following error.

Error encountered
[ART.118.5042] Adapter Runtime (Connection): Unable to enable connection resource acme:ELTdatabase.
[ART.118.5036] Adapter Runtime (Connection): Unable to configure connection manager.
com/microsoft/jdbcx/base/BaseXADataSource

actually i have included all 3 jar files reqd. for sql server and also it shows them in classpath but it gives above error.

plz help me its very urgent