You deploy mobile devices that run Microsoft Windows Mobile 5.0. Users store a price list in Microsoft Office Excel Mobile files on the devices.  
Users install a new mobile application on the devices.  
A user reports that the device performs slowly after the installation. All attempts to remove the application fail.  
You need to remove the application without losing the saved price list.  
What should you do？（）

You deploy a Microsoft Windows Mobile 5.0 for Smartphonebased mobile messaging solution that has two-tier authentication with Microsoft Exchange Server 2003 Service Pack 2.  
Company security policy requires that only company-approved applications are allowed to run on Windows Mobile 5.0 for Smartphonebased devices.  
You need to ensure that third-party applications are prevented from running.  
Which two actions should you perform？（）