Wrong pan no. in TDS return

We have filed TDS returns for F.Y. 2007-08 of our company. In the said returns a Pan no. was wrongly intimated to us by a transporter. The credit for the same has gone to some other person whose pan number was quoted in the return. My question is :

1. Whether the returns for 2007-08 can be revised now. if not then how can it be rectified now.

2. What is the liability of our company for giving wrong pan number in qtyl. return.