Thank you for reaching out to us. You can download the Ethernet drivers for Dimension 9200 from the below mentioned link.
Please select the appropriate operating system. In category select network as shown in the figure below.
You will see network drivers filtered below. Click on Network and it will show you all the network drivers.
You will find the Ethernet drivers listed below.
Hope this helps.
What version of Windows are you installing? Note Windows XP has now reached End of Life and may be unsecure...