How to change the output of the SAP pre-defined program?

Hi all,

I am try to use a SAP pre-defined program to output as per my special requirements. Can someone tell me what is the general approach to achieve this.

Say, If I want MM01 to display my company name on the top of page, what should i do? Actually, in my case, we need to change the output of the pre-defined sapscript. Thanks a lot!

Any answer will get awards.

Regards,

Samson