>No, the line is there :
>

>  a = a + 1
>

>Maybe I should use Sequantial Access and use a Print# statement?
>But the problem with that is that i have to forgot about my structure...
>Any idea?

This one is good, but you need another one after reading the last record (and before writing to the file):

Open FILE For Random As #1 Len = Len(tTemp)
Do While Not EOF(1) 'goto end of file
    a = a + 1
    Get #1, a, tTemp
Loop
a = a + 1
Put #1, a, tGood 'write something
Close #1