Yes just uncomment these 3 lines in Sell.pm $Temp = qq!$Script_URL?action=ViewItem&ID=$Item_ID&Cat_ID=$Param{Cat_ID}&Lang=$Global{Language}!;
$Msg =~ s/<!--Title-->/$Param{Title}/g;
$Msg =~ s/<!--Item_URL-->/$Temp/g;
by removing the # from the line start. | 
