在Sharepoint Designer工作流中访问其他站点的列表数据

Does anyone know if it is possible to Lookup list data from a different site when creating a workflow with Sharepoint Designer 2007? The Define Workflow Lookup dialog only allows you to pick from lists in the current Sharepoint site you are creating the workflow in. Ideally I'd like to be able to pick from a list in the parent site, or a site from a given URL (eg. Does anyone know if it is possible to Lookup li