You should be able to access the database with windows authentication, but it will be running as the user your host is running under.
Port binding is take Orchestration ports and matching them to physical posts you created in BizTalk Explorer.
Are you using Specify Now port? If so, try deleting the Send Port in the BizTalk Explorer.
If not, try removing all the port you set inside BizTalk Explorer on the orchestration, and then redeploy.