Any security device you come up with can be easily defeated but you could
write a entry to the registry when the password is first entered and then
check for it before presenting the password dialog again.

--
Jim
"Zygan" wrote in
message ...
|
| Hello i have written a program that defines and works out very lengthy
| formulas. I am trying to sell the program for what i believe to be
| enough money to protect. what i need is to be able to burn it on to a
| cd the put a time limit on the cd hence the user cannot use it after
| say 30 days or 5 uses. this would not be drama if i could save the
| file. e.g just use a counter that is VBA protected. But because it is
| on a cd it cannot save. i tried an idea of using the current time and
| date to be checked when excel started and that gave me a protection in
| which i was satisfied with. however once the 30 days up cd is unusable
| i could put a password on it to override the time checker however my
| buyer would have to enter the password every time for use. So basically
| what i need/want is a program excel/not excel that will limit the usage
| on the cd and that is full changeable and overidden i was thinking that
| once the workbook was purchased that the password i give them would then
| delete a line of code enabling them to save the workbook as it is save
| protected ? can anyone help ?
|
|
| --
| Zygan
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