found the solution. with help but now i learned something new.
- install the keytool eclipse plugin:
http://keytool.sourceforge.net/update/
- restart eclipse
- go in the menu to the installed keytool dropdown
- select open keystore. there you'll have : type: JKS, Filename: go to java/jre6, Password:..depends
- then a tree will appear in the keystore.
- right click on the root of the keystore of the tree and select import certificates.
- add the certificate and now you restart eclipse
- now it should work to add a webservice client. click on the name of the project-> new webservice client , add the link to wsdl and folow the steps from there
- good luck