Hi Lucy,
Ok...so you say you're trying to import an excel sheet into Access. When you use the external data button, are you adding in the excel sheet as a linked table or the other choice (which I call the stand alone table b/c it just imports all of the data into a regular table and is not connected to your excel sheet)?
Also for your form, did you use the Form wizard to create it? From the Form wizard you should be able to select the table that has the excel sheet data in it.
Either way, I look forward to your response.
Best,
Zhouma