Enhancement on PO Release

Question

Dear Experts,
I need to implement a enhancement on PO Release transaction ME28 where when a PO is successfully released an E-Mail is triggered to the vendor. I cannot use the standard functionality of sending this in ME28 as we do not have the vendor email address maintained in the PO. we have this maintained seperately and hence why we need the enhancement.
I tried the user exit with enhancement M06B0002 unfortunately we dont get the field FRGKL which is what we check for status 'R'. and this is not called after release its called during. Is there an enhancement that can be used for this purpose.
Either that or i need to impllement a BADI with the functionality. I am very new to  BADI's and have not done much OO ABAP programming. So dont know which one to use and how to use it.
Could anyone please direct me in the right direction.
thanks and regards,
Dilanke

Answer 1

to find the user exits & Badi's for the T-code..
go to table TSTC>enter T-code and execute> get the Program for the t-code..
and go to-se38-->get the package attached to the t-code..
next go to t-code Se15>expand the enhacement tab>enter package under userexit and
                                                     execute you will get the list of exits
                                                     available...
                                                  -->enter package under Badi's tab and
                                                     execute you will get the list of Badi's
                                                     available... 
All the User exits are stored in Table MODSAP..
Enhacement Points----
And to find the Enhamcement Points  go to progrmam or screen where the Items table is there and
  Press SHIFT+F4(enhace application tool) -->go to menu bar >EDIT>enhacement Operations
             -->Show implicit enhacements
--> once the yellow bar/Line appears right click and create a enhancement and add your own code.
Prabhudas