Setting up a Windows 2008 Terminal Server is easy:

RemoteApp is a special mode of Remote Desktop Services, formerly known as
Terminal Services, available only in Remote Desktop Connection 6.1 and
above. It allows your Clarion application to look like a locally running
program (and with local printer support), but it is actually a program
running over the Remote Desktop Protocol (RDP) on a remote server with
direct access to your TPS or SQL database.

You need:

1. A Windows Server 2008 (32-bit or 64-bit) or Windows Server 2008 R2 (which
is available only in 64-bit), any edition. I'm using Windows Server 2008
Standard Edition 32-bit SP2, on a Dell PowerEdge T100. I don't have a
monitor, keyboard or mouse connected to this computer. You need TS Client
Access Licenses (CALs). I bought my TS CALs from Dell when I purchased the
computer. You need about 32MB of RAM for each concurrent user.

2. On the client, you need RDC 6.1 or above using Windows XP SP3, Vista or
Windows 7 (comes with RDC 7.0).

3. On the server there is a wizard tool, under Administrative Tools |
Terminal Services | TS RemoteApp Manager, where you put in the parameters
you want, such as the full pathname of your Clarion exe (on the server), the
command line parameters if any, your server's router's (external) IP
address, etc. and then you click on the "Create Windows Installer Package"
button, which will create the .MSI file for you.

4. On the client, you run the .MSI file which is an executable file and it
installs the RDP file in the C:\Program Files\RemotePackages folder and puts
a shortcut on the desktop to that RDP file, or you can make your RemoteApp
program available through TS Web Access, which allows users to visit a web
site (Internet or intranet) to access a list of available RemoteApp
programs.

5. Finally, allow your Internet users access to your server, by opening the
TCP port 3389 on the router. (You don't need a static IP; I don't; I'm using
a cable connection which hasn't changed its IP address in years). The
terminal server listens on this port.

6. See http://en.wikipedia.org/wiki/Remote_Desktop_Services for more info or
download the e-book published on January 4, 2010 by Microsoft:
http://news.softpedia.com/news/Free-Windows-7-and-Windows-Server-2008-R2-E-Books- 130985.shtml.

7. I subscribe to the newsgroup: microsoft.public.windows.terminal_services.