Magento

Hi, we are trying to integrate paybox direct on our store with magento version 1.5.1.0 and we have received a error message that our Devise settings- currency settings ( sorry we are french) are not correct.

We have to : Find a variable called Devise or currecny and modify with putting in the number for EUR : 978 - can anybody help us ?
Here is the answer from paybox support :

Cette erreur signifie que dans votre trame Question Paybox Direct, vous ne passez pas la variable DEVISE qui devrait être renseignée à 978 pour un paiement en Euro, ou alors à 840 pour un paiement en dollar.
Vous trouverez ci-dessous la trace de votre appel, on voit que le champ devise est passé à vide.

Oct 27 21:44:37 frontest PPPS.php[30571]: Reception message : VERSION=00103&DATEQ;=27102011214437&TYPE;=00003&NUMQUESTION;=0000000011&SITE;=1999888⟩=082&CLE;=1999888I&IDENTIFIANT;=&MONTANT;=20588&DEVISE;=&REFERE;NCE=NDAwMDAwMDA2&PORTEUR;=401200--------35&DATEVAL;=0612&CVV;=---&ACTIVITE;=024
Oct 27 21:44:37 frontest MYppps_ip.e[9433]: DEBUG: Dans TraiteRequete identif_socket=85 idx=0
Oct 27 21:44:37 frontest MYppps_ip.e[9433]: INFO: Liste des valeurs passées ou nécessaires pour la trame ppps (si PAYS est vide alors on rempli avec des ?)
Oct 27 21:44:37 frontest MYppps_ip.e[9433]: DEBUG:indice=2 MAX=25 (type=3)
Oct 27 21:44:37 frontest MYppps_ip.e[9433]: INFO: MOT:VERSION , TYPE:0, LONGUEUR_MAX:005, PRESENCE:M, VALEUR:[00103]
Oct 27 21:44:37 frontest MYppps_ip.e[9433]: INFO: MOT:DATEQ , TYPE:0, LONGUEUR_MAX:014, PRESENCE:M, VALEUR:[27102011214437]
Oct 27 21:44:37 frontest MYppps_ip.e[9433]: INFO: MOT:TYPE , TYPE:0, LONGUEUR_MAX:005, PRESENCE:M, VALEUR:[00003]
Oct 27 21:44:37 frontest MYppps_ip.e[9433]: INFO: MOT:NUMQUESTION , TYPE:2, LONGUEUR_MAX:010, PRESENCE:M, VALEUR:[0000000011]
Oct 27 21:44:37 frontest MYppps_ip.e[9433]: INFO: MOT:SITE , TYPE:0, LONGUEUR_MAX:007, PRESENCE:M, VALEUR:[1999888]
Oct 27 21:44:37 frontest MYppps_ip.e[9433]: INFO: MOT:RANG , TYPE:0, LONGUEUR_MAX:003, PRESENCE:M, VALEUR:[082]
Oct 27 21:44:37 frontest MYppps_ip.e[9433]: INFO: MOT:MONTANT , TYPE:2, LONGUEUR_MAX:010, PRESENCE:M, VALEUR:[20588]
Oct 27 21:44:37 frontest MYppps_ip.e[9433]: INFO: MOT:DEVISE , TYPE:0, LONGUEUR_MAX:003, PRESENCE:M, VALEUR:[(null)]
Oct 27 21:44:37 frontest MYppps_ip.e[9433]: INFO: MOT:REFERENCE , TYPE:0, LONGUEUR_MAX:250, PRESENCE:M, VALEUR:[NDAwMDAwMDA2]
Oct 27 21:44:37 frontest MYppps_ip.e[9433]: INFO: MOT:PORTEUR , TYPE:0, LONGUEUR_MAX:019, PRESENCE:M, VALEUR:[401200-------------]
Oct 27 21:44:37 frontest MYppps_ip.e[9433]: INFO: MOT:DATEVAL , TYPE:0, LONGUEUR_MAX:004, PRESENCE:M, VALEUR:[0612]
Oct 27 21:44:37 frontest MYppps_ip.e[9433]: INFO: MOT:CVV , TYPE:0, LONGUEUR_MAX:004, PRESENCE:_, VALEUR:[1--]
Oct 27 21:44:37 frontest MYppps_ip.e[9433]: INFO: MOT:CLE , TYPE:0, LONGUEUR_MAX:008, PRESENCE:_, VALEUR:[1999888I]
Oct 27 21:44:37 frontest MYppps_ip.e[9433]: INFO: MOT:ACTIVITE , TYPE:0, LONGUEUR_MAX:003, PRESENCE:_, VALEUR:[024]
Oct 27 21:44:37 frontest MYppps_ip.e[9433]: INFO: MOT:VERSLIB , TYPE:2, LONGUEUR_MAX:010, PRESENCE:_, VALEUR:[5000]
Oct 27 21:44:37 frontest MYppps_ip.e[9433]: INFO: MOT:USELIB , TYPE:0, LONGUEUR_MAX:002, PRESENCE:_, VALEUR:[O]
Oct 27 21:44:37 frontest MYppps_ip.e[9433]: INFO: recu decode-->USELIB=O&VERSLIB;=5000&VERSION;=00103&DATEQ;=27102011214437&TYPE;=00003&NUMQUESTION;=0000000011&SITE;=1999888&RANG;=082&CLE;=1999888I&IDENTIFIANT;=&MONT;ANT=20588&DEVISE;=&REFERENCE;=NDAwMDAwMDA2&PORTEUR;=40120010--------&DATEVAL;=0612&OPE;=C13&ACTIVITE;=024 <--
Oct 27 21:44:37 frontest MYppps_ip.e[9433]: INFO: emis decode-->NUMTRANS=0000000000&NUMAPPEL;=0000000000&NUMQUESTION;=0000000000&SITE;=1999888&RANG;=82&AUTORISATION;=&CODEREPONSE;=00014&COMMENTAIRE;=Mandatory+value
s+missing+keyword:8+Type:2 <--
Oct 27 21:44:37 frontest MYppps_ip.e[9433]: INFO: Le message d’acquittement reçu est : OK
Oct 27 21:44:37 frontest PPPS.php[30571]: retour reponse : NUMTRANS=0000000000&NUMAPPEL;=0000000000&NUMQUESTION;=0000000000&SITE;=1999888&RANG;=82&AUTORISATION;=&CODEREPONSE;=00014&COMMENTAIRE;=Mandatory+values+mis
sing+keyword:8+Type:2

Does anyone know how to reslove this little problem ? I need to lunch my shop next week so its really urgent to get this paybox direct module working. We jsut dont know where to change this number in magento. Where is this devise or currency file to be changed ?
PBX_DEvise…

Thanks in advance for any advice.

Merci beaucoup
max