When you say Import do you mean really import or do you mean show as a Backdrop? If you mean show as a backdrop then yes you can do this.
1) Your project needs to have a Coordinate System and Projection / Datum etc. so that it can link to the Global WGS coordinate System - this can be a Site Calibration or a Coordinate System definition.
2) Your project must have one piece of data (point, line, text etc.) in the vicinity of the project in the coordinate system coordinates.
3) You must have a Trimble ID - if you don't have one go to www.connect.trimble.com, select Sign In and then Create a new Trimble ID - define your username (email address) and password.
4) Go to Support - Options - External Services profiles and set up a profile for your Trimble Identity. Sign in and check that it works.
5) At the base of the Plan View Screen click on the icon in the bank of toggle switches that looks like a map. This will turn on the Map View and display either the Satellite Imagery or a Street Map. If it is showing the wrong one then go to the Project Explorer, right at the top where it shows either Unnamed (for an unsaved project) or the project Name for a saved project - Right click on the project name and select the alternate option in Mapview settings - you can select Digital Globe Imagery or Trimble Mapview (street map) options.
If this is not what you are asking, please let me know what you were getting from Digital Marketplace
Alan