Question login new idea

[developer_mahmoud]

hi every body
i need to impement an idea in login form as follows
1-i need every 20 records must ask useer to change password
2-i need also a code to check that the autonumber field starts from number one and no record deleted
3-i need acode to be sure that every 20 record from 1 to current record there are differnts password ,it means that the code must check the first 20 records with the same password and the second 20 records with another password untill the current record
finnaly this idea force the user to change the password every length of time and cant repeat the old password even if he tried to delete some records to repeat the password
thank u so much

 

[JuggaloBrotha]

So what do you have for all of that so far? Where are you stuck?

 

[developer_mahmoud]

ineed to force the user not to delete ane record from the database from one to the current record
and every 20record must change password and must not repeate it more than 20 times

 

[JuggaloBrotha]

And what code do you have trying to achieve this?