Hello Greybeard , assuming you have run the Network Wizard in XP , and turned on file and printer sharing and put the XP machine in to a network ( MSHOME by default ) , go to the Network and Sharing Centre in Vista and turn on ...Network Discovery , File Sharing , Public Folder Sharing , do not turn on ...Printer Sharing , Password Protected sharing ( for now at least ) As you have both connected to the Internet you shouldn't need to do anything else for now . When turning on Network discovery ( drop down via arrow on right ) it will give you the option to change settings , you may need to do this to put the Toshiba into the MSHOME network . Test the network to see if the two PC's can now see each other . For the printer , on the XP machine , go into start/settings/printers , right click on the printer and select properties , the secong tab is marked " sharing " tick the box for " share this printer " if you have a Vista driver for the printer you have the option to load it there , then from the Toshiba go to add a printer , it will ask if it is a network printer , say yes , it will open a box asking you to search for it , do that and when it is found it will draw the preloaded drivers over from your other PC . See how we go from there .