If you go to help in ESS under Help for Administrators, there is a whole section about ViewBuilder including how to do an XML connection.

To create a Crystal Report from a view

1. Open SAP Crystal Reports either from Sage HRMS.
2. From the Start page, select Blank Report.
3. From the Available Data Sources section, expand the Create New Connection folder, and then expand XML and Web Services.
4. In the XML (data source) type and location dialog box, select Use Web Service Data Source.
5. Click Next.
6. In the Web Service Location dialog box, select Use HTTP(S) WSDL and in the HTTP(S) WSDL URL field, enter the following URL for the web service: http://[server]/selfservice/Viewserver.adv?wsdl where [server] is the name of your Sage Employee Self Service web server.
7. Click Next.
8. In the Authentication for HTTP WSDL URL dialog box, leave User ID and Password fields blank and then proceed to next step.
9. Click Next.
10. In the Web Service, Port and Method dialog box, the Service and Port fields identify the way in which the information will be retrieved for the report. The Method list enables you to select the view (entity) that will be retrieved (by the "Get" method) for your report. All active views from View Builder are included in the list.
11. Select a view and click Finish. You are returned to the Data Source Selection dialog box that shows the new connection you just created.