hello,
thank you for anserwing, but in fact it's not a comparaison beetween an old and a new version of QTpro i have to do, it's the first time i implement it on my site, the fact is that i changed before (i added lines) to certain files that QTpro ask me to doanload, so if i do it direct from the files of QT pro certainly i'm going to lost evereithings i made since i began with OS commerce, what would be nice, would be only cut fron QTpro original file and past in my properly files only what is needed to be add or cut :)
Another question, what must be the modes for stock and that for QTpro works :
stock checking/v?rification : true /false ?
... and so on
Tank you very much