I need your help please. I am breaking my head for weeks to get rid of

Hi All, I need your help please. I am breaking my head for weeks to get rid of this error. I did the following task: 1. Took the PJSIP project version 8 and added the wrapper classes that are necessary for my task(I need to record the conversation of all the calls automatically once the call is answered). 2. Then I decalred that function using 'DllImport' . 3. When i made a call and when i try to invoke the pjlib function from the .net window application i am getting the error like " Register the external thread before you use the pjlib functions". 4. Don't know how to register the GUI thread using the unmanaged code(c++). OR Please give me any suggestion how to record a call conversation using the PJSIP. Note: I have to call from the .net windows application.please help me. -- Thanks, K.M.Kumar Software Developer Trainee www.touchpointindia.com ================== TOUCHPOINT SOLUTIONS DISCLAIMER ================== CONFIDENTIALITY NOTICE: This e-mail message, including any attachments, is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use , disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message(S).