This project will concider management of a Xen-based virtual infrastructure in several aspects. First, management of the infrastructure itself with configuration and provisioning of virtual machines, followed by a proof-of-concept model for dynamic resource sharing for the virtual machines using the newly introduced Xen-API for resource consumption monitoring. Experiments will document the feasibility of such a model, using both single, independent virtual machines and various size private networks connected by local bridge devices. Two applications, XeniNFO for resource consumption monitoring and XenGuard for load balancing of the virtual infrastructure using live migration, have been developed. XenGuard, which utilizes the features of XeniNFO, has been merged with the open source virtual machine management tool MLN (Manage Large Networks) and will be publicly available in a future release of MLN while XeniNFO has been contributed to XenSource and is publicly available from the Xen-Unstable repository.