I have two PCs. One is an AMD 32 and one is an AMD 64. I have Win XP Pro x64 (i.e.64 bit OS) and Win XP Pro (i.e 32 bit OS)installed on the latter. I have successfully configured my LAN to allow me to browse the contents of the other PC in each of the two PCs, when I am logged into a 32 bit OS on both PCs. When I try to set up the network with my 64 bit OS, the network icon shows me "Connected XXX at 100.0 MB/s" on both PCs. I have enabled sharing on all partitions (drives) on both PCs. But I cannot see the other PC in my Workgroup computers (I could view both PCs in work group computers when I was in a 32 bit OS on both systems) The tcp/IP settins on both 32 and 64 bit OSes are the same. I could even surf the net on the slave PC via my shared dialup internet connection on my master PC (the AMD 64 bit one) SO, in a nutshell, is it possible to set up a LAN with a 64 bit OS and a 32 bit OS? Or am I doing something wrong?