How to confirm that the computer and equipment are connected to the network in Windows Vista?

To confirm, please use the Network screen. Making use of the Network window can facilitate reference of the computer and printer on the network in Windows Vista.
Please refer to the steps below:

1. Click Start and click Network.

2. The Network window appears. Right-click the window when file sharing is turned off. Some network computers and devices might not be visible. Click to change.

3. Click Turn on network discovery and file sharing.

4. After displaying User Account Control message, click Continue.

For standard users, please see this solution.
[Windows Vista] About User Account Control

5. If the User Account Control message is not displayed, please refer to the following steps.

6. In the User Account Control window, the network folder will be displayed.
*Based on the program environment, the image display will be different.