how can i restore contacts....

[NYCDito]

ok, so i was uploading some stuff to the phone...E-sword bibles,Base Hue,NULed, and i think that was it...i started looking around on the phone itself and manually adjusted an active sync setting, i remember it said something about outlook, and if i was sure i wanteed to continue...i thought i was freeing up memeory, but i unintentionally erased the contacts...this was my friends phone ....im kinda when it comes to this 'newer' tech stuff which is sad, but i REALLY dont know how to get the contacts back...i tried searching, but i dont really undersdtand some of the terms and stuff are saying..i can comprehend english, but some of you guys throw around terms i dont know ... i read something aboput a pim.vol file, i see that but dont know what to do with it...and im pretty sure she has NEVER backed anything in her phone, shes worse than me with this stuff.....PLEASE any help will be appreciated....thanks....