Design your form in a separate sheet. In the Cell where the Name goes Use
Data Validation and choose list and reference the range for the names.
You can select the first name and Print off the certificate then select the
second and so on.
This assumes that the data list of names is in the manner you want on the
certificate.
Alternatively, you could use Word to create the certificate and use MAil
Merge to link the Word document to the Excel data list. Once merged you can
print off all the certificates together.
To do the same in Excel youo would have to write a program to do this.
HTH
Peter