The simplest way to print from a Linux ditribution is to use the copier's web interface along with a copier code that you can get from your Administrative Assistant. Use that code as both the username and password when logging in. Once logged in, you should see something similar to the following:
If you see a different page, click on the 'Print' link at the top of the page. Once there, upload the file you'd like to print, choose from the options provided, and enter the code you received from your Administrative Assistant in the 'User ID' field.
To avoid paper size issues, under the 'Paper Selection' section, select either 'Letter', or 'A4' in the 'Size' dropdown menu.