visit the official website of madras high court . fill in your case details and you will find orders posted in your case uploaded . you can download a copy .

have you paid your lawyer fees ? if so he would obtain certified copy of order for you on payment of charges

If your lawyer is not cooperating with you then change the lawyer. You may download the copy from the website of the Madras High Court as suggested by ld.Mr.Sethi. However, what you need is a certified copy, and not a web copy.