Making distributions which include read/write files

I'm using Visual Studio 2008 for handheld development and when some SQLite and .xml files are being checked out of TFS they are being written with read only permissions, hence not working properly, e.g. not being writeable, at run-time.

I'm using an install project to make a setup CAB file which is deployed to the handheld.

How can I make sure there files are writeable when they are brought out of TFS and written to the CAB file by VS, I seem to be able to get around this by checking out the files first, before compiling, but this may not always be an option, and seems like an unnecessary step.