SAP SCRIPT questions

Hi,

I am copying a standard delivery note SAP SCRIPT /MESAFS/ZDELNOTE into my own program and making changes.

Now my questions are:

1. Where should i mean which transaction should i execute this to see the output.

2. Before that i have to link my zform replacing the standard form some where. how should i do this ?

Your help is greatly appreciated.

Thanks in advance.