Forms update and enter data into a Table

[achett]

Please help...I have a Table with the following fields JobName, Job Title,
Printer, Lines..etc. I would like to enter and update this table via a
Form.On the Form I have a combo Box(JobName), which helps me to retrieve a
record from the table. Once thats done, I want to assign a number to that
record (I might use the same JobName more than Once with a different Job
number). I do not have the Job Number included in the Table and I do not have
any Primary keys. After I make the appropriate changes to the record I want
that record to be saved to the Table.

Thanks a lot..