Product key retreival

i have original bl1, in order to install bl moxxie or ned dlc i need a product key witch did not come with said disk.
how or where do i find the product key for this disk!. pls help Moxxie withdrawl.

The original BL1 (as in, the launch version) did not include any of the DLCs that I remember. There might have been some retail copies that included codes for the first two DLCs; those would have been on a card insert in the case. You could also buy the first two DLCs on a separate disk as a single item. The GOTY version had a second disk in the case which installed all four DLCs. Do you know which version you had/have, and on what platform?