Hi. I've just networked my Mac laptop and PC through a wireless router. They both connect to the internet with no problems and i can ping between machines. I need to access the PC hard drive from the mac but I cant connect and am getting the following error "Sorry, the operation could not be completed because an unexpected error occurred (Error code -50)". I've followed the steps at http://guides.macrumors.com/Networking_Windows_with_Mac_OS_X. I have also googled this and tried everything i can find but still no luck. I've added 'local' to 'search domains' in network prefs (as per apple website) and tried the following steps from a forum but am still getting the error message. step 1 : download smbfs.kext.zip step 2 : open terminal (located in applications / utilities) step 3 : sudo -s (then enter root password) step 4 : rm -R /System/Library/Extensions/smbfs.kext step 5 : cd /Users/yourusername/Desktop step 6 : unzip smbfs.kext.zip step 7 : cp -R smbfs.kext /System/Library/Extensions/ step 8 : rm -R /System/Library/Extensions.mkext step 9 : rm -R /System/Library/Extensions.kextcache step 10 : chmod -R 755 /System/Library/Extensions/smbfs.kext step 11 : chown -R root:wheel /System/Library/Extensions/smbfs.kext step 12 : shutdown -r now When I SMB, it does connect to the XP machine and accepts my windows password and gives a list of available drives but the error message pops up as soon as i select a drive. So it looks like comms is working but it just wont let me access the drive. Any help would be appreciated as i've spent lots of time over the last few weeks trying to get these machines to talk through wireless and am almost there! Thanks guys, Dren. EDIT: Or is there an alternative to SMB, i.e. running an FTP server on the PC and accessing the directories over the LAN, or something similar?