Deployment error in Windows Mobile5.0 Application

Hello

another issue,i am using Winmobile5 API with C# i am just keep getting this again and again

Build started: Project: Mobile5Db, Configuration: Debug Any CPU
Mobile5Db -> C:\Documents and Settings\Adnan\My Documents\Visual Studio 2005\Projects\Mobile5Db\Mobile5Db\bin\Debug\Mobile5Db.exe
Deploy started: Project: Mobile5Db, Configuration: Debug Any CPU
Deployment and/or registration failed with error: 0x80070020. The process cannot access the file because it is being used by another process.
========== Build: 1 succeeded or up-to-date, 0 failed, 0 skipped ==========
========== Deploy: 0 succeeded, 1 failed, 0 skipped ==========

I don`t understand what does it mean by "the file",in error list it displays like:

Error 1 Deployment and/or registration failed with error: 0x80070020. The process cannot access the file because it is being used by another process.
Conman HelpText System

any idea?

Thanks

[1034 byte] By [AdnanSiddiqi] at [2007-12-16]