How to create Dynamic Send port for MS CRM 3.0/4.0 in BizTalk 2006

HI All,

I want to create a dynamic send port for MS CRM 3.0/4.0 adapetr. but i didnt get how to create it? Also i didnt get any methods to set URL address, username and password required to access CRM.

CRM Url is : http://localhost:5555

Username: Administrator

Password: password

Orgname: MicrosoftCRM

I installed MS CRM Adapter[Both for 3.0/4.0 common and also separate adapter for CRM 4.0].

Thanks in advance.