Mobile Application Development

Hi, I need to accede to information that is updated by means of a Pocket PC Datalogic the Pegaso with Windows Compact Edition 5,0 from an application done in VB.NET 2005. All the solutions that I have tried until the moment have to do with replicas, synchronizations, etc. Which I do not see feasible because the user must carry out several tasks in different applications and/or of manipulating configurations in which he can be mistaken and lose some data.

Thanks.