The Crm SDK documentation should provide all the information you need. If you have a specific problem, then it would help to post your code with it.
You may need to review your data structures. Based on the information you provide, it would seem possible that 2 users could be related to the same Technology - what would you do in that scenario ? I'd suggest the relationship between the Technology and
User entities should be the other way around - i.e. N:1 Technologies to Users, with a lookup field on the Technology entity to the User entity
Microsoft CRM MVP - http://mscrmuk.blogspot.com/ http://www.excitation.co.uk