Очень пользительная страничка с описанием веб-сервисов sharepoint portal, что, безусловно, можно использовать в своих целях программным способом.
WSS Web Services
 Web Reference
 
Administration Service
 http:///_vti_adm/admin.asmx
 
Alerts Service
 http:///_vti_bin/alerts.asmx>
 
Document Workspace Service
 http:///_vti_bin/dws.asmx>
 
Forms Service
 http:///_vti_bin/forms.asmx>
 
Imaging Service
 http:///_vti_bin/imaging.asmx>
 
List Data Retrieval Service
 http:// /_vti_bin/dspsts.asmx>
 
Lists Service
 http:///_ vti_bin/lists.asmx>
 
Meetings Service
 http:/// _vti_bin/meetings.asmx>
 
Permissions Service
 http:// /_vti_bin/permissions.asmx>
 
Site Data Service
 http:///_vti_bin/sitedata.asmx>
 
Site Service
 http:///_vti_bin/sites.asmx>
 
Users and Groups Service
 http:///_vti_bin/usergroup.asmx>
 
Versions Service
 http:///_vti_bin/versions.asmx>
 
Views Service
 http:///_vti_bin/views.asmx>
 
Web Part Pages Service
 http:// /_vti_bin/webpartpages.asmx>
 
Webs Service
 http:///_vti_bin/webs.asmx>