Unit Testing a BPEL via SSL

Is in possible to create a test in Netbeans for a WSDL accessed via https?

I have a working BPEL, to which I added a new WSDL having an https address at port 9181.  I can retrieve the WSDL with Firefox, and I can create a new test in the SA project.  However when I run the test, it fails to get into the BPEL:

May 22, 2009 12:40:29 PM com.sun.xml.messaging.saaj.client.p2p.HttpSOAPConnection post
SEVERE: SAAJ0009: Message send failed
com.sun.xml.messaging.saaj.SOAPExceptionImpl: java.security.PrivilegedActionException: com.sun.xml.messaging.saaj.SOAPExceptionImpl: Message send failed
        at com.sun.xml.messaging.saaj.client.p2p.HttpSOAPConnection.call(HttpSOAPConnection.java:146)
...
Caused by: java.security.PrivilegedActionException: com.sun.xml.messaging.saaj.SOAPExceptionImpl: Message send failed
        at java.security.AccessController.doPrivileged(Native Method)
        at com.sun.xml.messaging.saaj.client.p2p.HttpSOAPConnection.call(HttpSOAPConnection.java:140)
        ... 3 more
Caused by: com.sun.xml.messaging.saaj.SOAPExceptionImpl: Message send failed
        at com.sun.xml.messaging.saaj.client.p2p.HttpSOAPConnection.post(HttpSOAPConnection.java:344)
        at com.sun.xml.messaging.saaj.client.p2p.HttpSOAPConnection$PriviledgedPost.run(HttpSOAPConnection.java:169)
        ... 5 more
Caused by: javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
        at com.sun.net.ssl.internal.ssl.Alerts.getSSLException(Alerts.java:174)

I tried using SoapUI but there's a simular problem there I guess.

Is there a way to test the BPEL via https from Netbeans, SoapUI or any other tool?  Thank you