I feel like an idiot for having to ask this, but I can't figure out how to do something that must be pretty straightforward. StyleForum has always provided good answers to tech queries, so here goes... I have both a desktop and a laptop connected to the same router (the former wired, the latter wireless). I have an external hard-drive connected to the desktop, and it contains all my music. I want listen to that music, using my laptop, in other places around the house. So, how do I set this up? I'm running XP on both machines, and the laptop is work-owned, so I can't change any of its setting (e.g., domain/workgroup). But surely there must be a way (using folder sharing, IP addresses etc.) to share files between the machines, without having to install anything else, no? I don't need anything fancy -- I just want to be able to open my desktop's external HD, using my laptop.