V-chip code. We were given a small 13" Zenith television without the remote control or user

Question

We were given a small 13" Zenith television without the remote control or user manual, both of which had been lost. We cannot disable or reset the V-chip code because we do not have the manual. We can use an infrared PDA to control the television, but without the V-chip code or the ability to disability the chip, our viewing is somewhat limited. Any ideas?