Hi Our sharepoint application is extended as an extranet allplication in which authentication is done by Liveid users.(using RPS authentication).So we need to maintain users of our valid partners. valid users will have tokens in database. All the users are liveid users.But depending on the existing token user is validated. so in order to maitain these valid users, groups are maintained in people and group. please provide the information on creating custom membership provider to resolve

Hi Keerthi, Please refer http://blog.robgarrett.com/2006/06/01/custom-membership-provider-under-minimal-trust-in-sharepoint-2007/ http://splistmp.codeplex.com/ http://www.developer.com/net/asp/article.php/3622481/Enabling-Custom-Authentication-for-SharePoint-2007.htm HTH. Warm Regards, Pratik Vyas | SharePoint Consultant | http://sharepointpratik.blogspot.com/