level volume on final mixes?

The problem was solved: Using the volume meter in the mixing section dertermines output level in wave-file. It has to be done by eye. Additional output can be gotten from gain and booster. Excact levels on different tracks can appearantly not be achieved in guitartracks, but possibly in some external wave-editor.
  
 
Hi
Does anyone know how to get the exact same volume on a number of different final mixes in guitar traks/V20. I've tried working with input levels, Boost11, etc but it seems like the only way is to finalize as wavefile and then listen to the volumes in mediaplayer, go back to mixing etc until the levels are straight. Any suggestion (apart from upgrading unless absolutely unavoidable - love my little mini-daw) would be welcomed.
Thanks in advance,
Thomas, Denmark