In this research we explore how a handheld display (HHD) can be used to provide input into an Augmented Reality (AR) conferencing application shown on a head mounted display (HMD). Although AR has successfully been used for many collaborative applications, there has been little research on using HHD and HMD together to enhance remote conferencing. This research investigates two different HHD interfaces and methods for supporting file sharing in an AR conferencing application. A formal evaluation compared four different conditions and found that an Exocentric view and using Visual cues for requesting content produced the best performance. The results were used to create a set of basic design guidelines for future research and application development.