We have a small number of people in the office that are still working on A2003, while most are running A2007. Many postings have noted not using runtime on a machine which already has Access. But, I'm wondering if it would create a problem to install the A2007 Runtime on those machines that still have A2003 installed. The primary purpose would be for use of A2007 database that is split BE/FE on a shared folder.