In Windows Vista, Remote Desktop connection is disabled by default. To turn on Remote Desktop (in Business and Ultimate editions), please follow these steps:

• Right click on My Computer and choose Properties
• Click on the Remote Settings in the menu on the left side
• In the Remote tab, click the radio button that says: “Allow connections from computers running any version of Remote Desktop”, if you wish to connect from a machine running Windows XP/2000.
• If you wish to connect from a Vista machine on the same network, please select the bottom radio button.
• Click on Apply and OK

To enable Remote Desktop on Windows Vista Home Premium, please follow the instructions on this Web site.

To set up the connection so you can connect to your Windows Vista computer remotely, follow the instructions on the Techrepublic Web site. It is quite detailed and it includes screenshots.