Windows Restore CD

Hey guys, I’m kinda new to the fourm (been trolling for a while just never posted). Anyway, my laptop is in need of a system restore and I can’t find my Windows CD that came with the laptop when I bought it from Dell. Do you guys know if I could call Dell and get another one or do I have to call M$ and give them my SSN and blood sample to get another copy? Any help apprecitated.

Bryan