Denis,

You didn't provide enough info to make any specific recomendation.

>What would be the easiest thing to do?
>
>I'll tell you what needs to be done and perhaps you'll be able to tell me how you'd work this out.
>
>I have an application used in different branches of a given company.
>
>The main office wants to collect the data from these branches from time to time.
>
>Your preferred solution would be?
>
>