Edit only owned list items in Windows Sharepoint S

Question

Is there a way to limit the "edit item" permission in WSS 3.0 to only allow a user to edit his own documents or list items? We need the ability for a user to edit only documents/list items he creates - NOT items that someone else created. So, essentially we need a sub-set of the EDIT permission as well as ADD.

Is this possible in Windows Sharepoint Services 3.0? Is there a way to create custom permissions in code or a feature?

Answer 1

Note that item level permissions on large numbers of documents increase the load on your SQL server quite a lot.

Answer 2

Additionally, you could just give each person their own folder.

Give everyone read permissions on the SharePoint list/document library, but give each person full control privileges over their own folder. This will allow everyone to read everything in a list, but create/edit their own documents.