Hi, I want to issue my program with an 'x' user license but don't really know how to enforce. The program will reside on individual workstations but does have access to the server, so I had thought of having some kind of check file reside on the U: drive or similar. In that when the program is install it writes the workstation id to the file and if say five id's are already registered it informs the user they can't install anymore......but not sure if this is the best or easiest way, anyone got any ideas

First idea that dropped on my mind is to have a table in your database that will hold info about the workstations personal data, like HDD serial number. So, your application should do the following when starting:

1) conect to database
2) check to see if its serial number exists in table
3) if yes, continue with the app
4) if not, check for the number of records that this table holds
5) if record number < 5, then add serial info to htis table, and continue with the app
6) if not, do not allow access to database...

You should password protect this table, and could encrypt this data. As every protection, it can be bypassed, but then, nothing caqn be 100% protected...  

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