I am the IT guy for an office right in the middle - 30 users. As much as most people don't want to admit it, Microsoft owns this space, and Microsoft small busi

I am the IT guy for an office right in the middle - 30 users. As much as most people don't want to admit it, Microsoft owns this space, and Microsoft small business server paired with Office is an excellent solution here. Sure, you need a dedicated server, but SBS is very wizard based almost to the point where a receptionist can administer it. Sharepoint is the logical next step, a step we're going to take this year, probably. Specifically, look at MS Small Business server, which includes about 30 user licenses, exchange server, file server, dns active directory and just about anything else you need, and is made to run on one server (most versions include a second server license too, for virtualization or backup).