How to link DMS document from FB03

Dear Experts,

I want to link the document from FB03 to cv01n. i know it is not a standard process... i had also raised OSS message to SAP ... SAP said that it can be done through customizing, kinldly let me know how to customize the above scenario, I know the process of linking FB03 from DMS, but how to achive from FB03 to DMS.

Regards

abhi