internally or externally. If it is internal try this.
You need to make sure RDP is enabled on the server you want to connect to. Just right click on My Computer, Properties and select the remote tab. From there it is a simple check box. Also if your server is behind a router you need to open port 3389 the same goes for the firewall.
Assign the user permissions to use Remote Desktop.
To assign user permissions to use Remote Desktop
To complete this procedure, you must be logged on as a member of the Domain Admins security group.
On a computer running Windows Small Business Server 2003, click Start, and then click Server Management.
In the console tree, click Users.
In the details pane, right-click the user account that requires permissions to log on to Terminal Services, and then click Change User Properties.
On the User Properties page, click the Terminal Services Profile tab.
Check the Allow to log on to Terminal Server check box.
Cause: The client computer running Windows XP Professional is not configured to allow Terminal Services connections.
If it is an external connection
Run the Routing and Remote Access Wizard.
http://tinyurl.com/23s7fx
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