Earlier this week, I downloaded SP2 for one of my XP machines. Everything seemed to go very smoothly, but now I've realized it's caused my computer to stop sharing files over the LAN. I have 3 computers networked with cat5e cable and a 5 port switch. I use ICS to share a dial up internet connection from the sp2 machine. Since sp2 has been installed, the other 2 computers are interacting normally with each other, but neither one can 'see' the shared documents folder of sp2 machine. When I view the workgroup computers, all three are there, but when of the other 2 try to access the sp2 computer, they get an ....you might not have permission to use this resource...access is denied...error. On the other hand, the sp2 machine interacts fine with the other 2 and all three are sharing the internet connection and the printer which is connected to the sp2 machine. I have file and print sharing enabled, but a security setting must have been changed when I installed sp2. I'd appreciate any advise you could offer. Thanks.