I just bought a Motorola v3i from a phone shop for RM250. But the only problem is the previous owner has change the default unlock and security code which is 1234/000000 respectively. I googling around and found some info that the code are stored in the phone in seem.
This are the tools ... just convert the seems ou get to text then you will get the code directly ....
download the following seems from phone by p2k tools and see the code
0074_0001 - Stores Phone Lock Code
0076_0001 - Stores Phone Security Code
Any Question can ask me ...