Textbox to label

Question

Evening all,

Sorry to call on you again, I've have a form that will sign in users from my access database. But the forms only recognise the users input in order to sign them in. Further on I'm adding more detail to the students data. But I don't know how to get the data from the text box on the sign in page over to where more data is added in order for this data to be put in the same row in my table. I hope that makes sense, any advice would be great. 

Thanks

K