Log in to your PDF eXpress Plus account.
Start a new conversion: Type in your paper's title: Select the file from your computer, then click "Upload File": On the next screen, click "Continue": The file's status will be "Converting to PDF": The conversion/verification should take a few minutes. You can leave the PDF eXpress Plus site, the system will send you an e-mail, when the file is ready. If you log in to PDF eXpress Plus, you will see the status: Download the PDF (click on the paper title):