IT Employment

I have a qa lab with hundreds of aix, linux,solaris,hp,windows,osf,openVMS and a few OS400 machines. I need an app that can inventory and report the system config and then let me share the machines. Similar to the way outlook lets you share offices. It must be sorted by platforms and web based. I can't install an agent to collect this data on each machine. I need machine name, ip address, memory, arch(x86,powerpc,ia64,alpha,etc), processor count, os version and locales. I need a user to enter their name and NIS password, select available machines that are not in use, select a start and end date, then submit. Their name shows up with all of the config data. Also machine status can be shared, dedicated, contact xxx for access. Has anyone seen an application that even remotely provides this capability.