Registration and obtaining a PESEL number in Wrocław

Hi there, I am a Portuguese girl and I just moved to Wrocław for work and I need to register in the city and get a PESEL number but I don't know exactly which office I should go to do both things at the same time. I know it should be at the City Hall somewhere but this has several buildings around the city and I don't know which I should go. Can someone help me out?

The PESEL number will be done at the same place where your landlord takes you to get your maldunek (i.e. the gmina office, not city hall). The registration will be at the local foreigners office.

[edit] Your local foreigners office is here:
The Dolnośląski Office of Voivode
Department for Civil Affairs and Foreigners
Pl. Powstańców Warszawy 1, 50-951 Wrocław
Phone: 71 340 66 55, 71 340 67 02
fax. 71 340 66 85
duw.pl

All the info you need is here:
malopolska.uw.gov.pl/default.aspx?page=Residence_permits_for_the_nationals_of_the_European_Union

Thank you for the information :)

I'm happy to have helped. Do come back if you need any more help (or just fancy joining in the discussion and/or chat here).