Additional tabs in the production order

Dear Friends,

I want to have some additional tabs in the production order (one tab in the header and one tab in the item details). Some customer specific details I am not able to maintain in the production order... Hence I am planning for this one.

Please let me know...if anybody has done this. If so please give me some idea and let me know...how can we do it. Thanks in advance.

Regards,

Surya.