Hi again, Zafi
I must add to this post, as a very good point has been brought to my attention - that often, Salespeople on the road may not have easy access to the internet! In this case, Bravo Software's 'Remote Desk' would be a better solution - and it is available for both the PC as well as the popular Hand-Held devices.
I believe then the Salesperson can keep track of their own Customers, and when ready, can email the files to head office for entry into the main accounting system.
Take care,