It seems like you are encountering an issue with sharing the internet connection from a PC running Windows 7 to a PC running Windows XP SP3. The steps you've outlined are correct for setting up internet connection sharing, but there might be some additional configurations needed to ensure proper connectivity between the two machines. Here are some troubleshooting steps you can follow to resolve the issue: 1. Check Firewall Settings: - Make sure that the Windows Firewall or any third-party firewall software on both the Windows 7 and Windows XP machines is not blocking the shared connection. 2. Verify Network Settings: - Double-check the IP addresses and the gateway settings on both machines to ensure they are configured...