Windows XP can’t logon to my domain?

Dear Colleague:

I faced the same problem you had. However, the solution was proposed to you is not applicable in my case. I have the professional version. XP won’t let me in to my domain account. However, I can share the resources and give the permission to the domain users from the list XP gives me. Beside, I managed to configure my outlook 2002 at our enterprise Exchange Server to my domain account. Knowing that I always get the message “the trust relationship between the workstation and the domain failed”.

Thanks for your help