If, for some reason, you are unable to install the client to your machine, you can always log in through your web portal.
Go here: signin.swizznet.com
Once there, log in with your provided Swizznet credentials. Once accepted, your desktop will popup!
When printing from the HTML5 portal you'll only have a cloud printer option:
This printer generates a PDF and then brings up your local default printer.
For moving files in this environment, click here.