Gotta jump in here. First, as Sandeep and David mention you cannot use RDP, LMI or GoToMyPC for instance to log in to the same computer.
You could use David's solution, but no offense to David, it would just not be a good solution for a multitude of reasons.
I say this all the time, but I will say it again, no one should use the computer that AC is on. We can fight
about server vs workstation, but either way you want the computer to be dedicated. There are four major reasons why you shouldn't do this. First, is the user takes up valuable resources. Doesn't matter how powerful it is, why lose some of the resources to a user. Second, it increases the chances of viruses and other malware. It doesn't have to come from the Internet directly. Third, not to talk about servers, but Sandeep will tell you his server has been running without a reboot for like 60 days. Mine is 72. What are the chances that the user shuts down the computer, restarts it or it just crashes. A workstation won't go 60 days without shutting down. If a computer crashes (I just mean suddenly reboots) while people are in the database, it can become corrupted. You also have to worry about Windows Updates, AV scans, etc. But, if you want to increase the chances of it, use it as a workstation. Fourth, you are putting a user directly on the computer with the AC databases. If you keep the central computer in a safe place with good permissions, there are little chances of mistakes being made. For one thing, you can't tell when User A is stealing files or doing other things to the computer when they are using it, but if no one is to use the main computer, then it is easy to spot someone if they are on it. If the permissions aren't effective, then hopefully the user gets good raises and bonuses or doesn't otherwise get irritated with the office as deleting files or stealing company records is a fun way to get even.
Finally, this should be written in stone. If you have satellite offices, you MUST use a terminal server. And, it should not be WIN 7. If you have satellite offices, it sounds like you see a lot of patients. If you purchase a server with SBS 2008 Premium, it comes with Windows Server 2008 R2. Talk about a great combination for a remote office. Each person who logs in remotely must have a license, but they all can use AC concurrently. And, it will appear as though it is in their office.
Don't skimp and go with WIN 7. As Sandeep says, it is just for testing purposes. This is what you should do. You should go to the Internet or the Yellow Pages or Yelp and find a good company with Microsoft certified techs. If you have to ask how to set up an office remotely, then you need IT. Besides, they can set everything up ten times faster than even the most proficient computer geek. Pay them the money to set it up correctly the first time.
I read these posts (and there are many threads on this) and it actually hurts me to read them. I plead to users to set up TS and use servers. I know that we have our little flame wars on P2P vs servers, but once you start talking satellite offices, servers are the only way to go. If a drive goes down and you have RAID, then the other offices aren't sitting there all day with no AC.
You have gone to college, medical school, residency and now primary care. Amongst all the physicians, you probably have amassed over a million dollars in debt. Pay the $5,000 to get the servers, OS, CALS and make sure your router/firewall and switches are set up correctly. And, while they are there have them suggest a really good strategy for backing up the server.
Your data is mission critical. Seriously. Imagine what it would be like if you lost all your data. It just is an investment you should make.
And, don't sync.
.png "ACUF Donor I")
Terminal server is designed to give access to multiple remote users. You can modify Windows 7 to allow multiple users. Technically, however, you should be using a Terminal Server like Server 2008R2 or Multipoint Server. Here's an example: