Urgent help needed

I am currently doing a program to convert the serial number which
representing the seconds elapsed between midnight 01/01/1970 and now,  
to today's day and time.   Such as you enter :822819600   it will convert
to '28/01/1996 20:00:00'

I will be glad that it will be in Visual Basic format, or C.   but others
will do.  Thanks in advance.


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