I Downloaded SP3... and it works fine....but it did not install LinkLayer or TCP/IPV4 .... I tried installing the Linklayer Topology after the SP3 install, but because I have SP3 already installed, Microsoft say I dont need to install the Linklayer Topology .. So I'm stumped!!!What can I do Please!!! Edit... Can I somehow install the LinkLayer Topology, (KB file) separately without removing SP3...This would be my preferred method..Thanks in advanceCheers

The LinkLayer Topology Discovery (LLTD) Responder for Windows XP SP3 is available for downloadhere .TCP/IPv4 is a standard part of all versions of Windows XP, and it appears in the network connection properties asInternet Protocol (TCP/IP) . If you can access your LAN or the Internet, IPv4 is installed.Boulder Computer MavenMicrosoft Most Valuable Professional

The LinkLayer Topology Discovery (LLTD) Responder for Windows XP SP3 is available for download here .TCP/IPv4 is a standard part of all versions of Windows XP, and it appears in the network connection properties as Internet Protocol (TCP/IP) . If you can access your LAN or the Internet, IPv4 is installed.Boulder Computer Maven Microsoft Most Valuable Professional

The LinkLayer Topology Discovery (LLTD) Responder for Windows XP SP3 is available for downloadhere .TCP/IPv4 is a standard part of all versions of Windows XP, and it appears in the network connection properties asInternet Protocol (TCP/IP) . If you can access your LAN or the Internet, IPv4 is installed.Boulder Computer MavenMicrosoft Most Valuable ProfessionalHi Steve....Brilliant... Your fix worked perfectly..Kind RegardsRichard

You're welcome, Richard!Boulder Computer MavenMicrosoft Most Valuable Professional