1> Regarding UDDI registry first you should be able to connect to UDDI registry from wM developer hope you have all the required information to open a UDDI registry session. A valid UDDI v3 registry account, configured with the proper permissions to perform UDDI activities
2> Expose your WSDL file. You can check the same on SOAP UI. If you want to publish to UDDI, Only provider Web service descriptors are published to UDDI using Developer.
For more information refer Chap. 4 Publishing IS Services to a UDDI Registry as a Web Service from 7-1-1_Web_Services_Developers_Guide.pdf