The procedure varies depending on the country of origin of the driver’s license to be exchanged. Thanks to the Convention on Road Traffic of Vienna, 8 November 1968, 67 countries have a simplified procedure of exchanging driver’s licenses. The list of coutries is avaliable here.
If your country isn’t included in the Convention then, besides the prodecure described here, you will also be required to pass a theoratical test of driving at a driving examination center in Wrocław. You will be instructed how to do that in the City Council’s office when you submit the application.