How to link a non-standard object to a Document

Hi Experts,

I have a requirement where I need to attach a non-standard object (e.g. Product Line) to a Document.

What changes in the customizing and the standards I need to do.I am not able to figure out that.

Please let me know.

The requirement is very urgent.

Thanks a lot in advance.

Points are guaranteed to the useful answers.

Regards,

Himanshu