To connect to another computer, first determine its name or network address. If you know its network address and are using a Mac, click on Go in the Finder. Click on Connect to Server, type the network address in the field, and then click Connect.
If you know the name of the other computer, click on Go in the Finder, click Connect to Server, and then click Browse. In the Shared section of the Finder window, locate the name of the other computer, select it, and then click Connect As. Some Macs automatically connect you as a guest.
To connect to another computer from a Windows 7 operating system, go to Start, right-click on Computer, and then click Properties. Go to Remote Settings, and enter the administrator password if the computer prompts you for one. Select one of the options under Remote Desktop, and click on Select Users.
If you have administrator privileges on the computer you are using, the operating system automatically adds your user account to the list of remote users. If you are not an administrator, click on Add in the Remote Desktop Users dialog box, and then click Locations. Select the location you want to search, key in the name of the user you want to add, and then click OK. After the name appears in the list of remote users, click OK, and then click OK a second time.