report similar to standard transaction

Hi experts,

I ve got a requirement wherein i need to develop a report which is similar to QA32 transaction (Inspection Lot selection. That is, my client wants to add and remove only a few parameters from this standard transaction.

For eg., i need to remove the parameter 'selection profile' , 'End of Inspection' from the existing transaction and need to add few fields like 'Customer Invoice No', 'Customer Invoice Date' etc.,

So could someone tell me what is the approach to be followed for achieving my requirement?

Should i need to copy the existing program and do the changes in the copied program or is there any other way to achieve my requirement?