Thanks for the help, everyone. I now have a better idea about what's expected of me. I'm not responsible for the whole budget. I'm just supposed to provide ballpark figures for any major projects I might want to do. It turns out that I won't have to worry about the budget for consumables, projector bulbs, or hardware replacements.
torledo: Yes, that's MA as in Massachusetts.
So, I'm thinking of asking for money for software license renewals, upgrading our spam filter software, a few tools, and some sort of a backup system.
Any recommendation for a cross-platform (Windows and Linux) backup system good for a couple terabytes (and maybe some expansion later)? I'm thinking something like a simple RAID 5 NAS that I can mount on Windows and Linux...uses standard hardware and is accessed as a standard share.