>Ok, Cetin
>
>I will try it
>
>My application will work in network and 2 users will insert invoices
>
>I think my test is exaggerated because it simulates 2000 records being filled
>by 3 users almost at the same time (about 6 records per second)
>
>I would like your opinion or somebody else opinion's about it
>
>
>
>Moises

It's not exaggerated:) I do such testing more rigorously. My preference is GUID as I already said.
Cetin