Hey all, I did a quick search and couldn't find a thread on this, so if this is a repeat, I am sorry, but here goes: I have a macbook running 10.5.1 that I hook up to my windows based work network and its associated server with all of our project files. All other windows machines, labtops and desktops running win xp or win2000 can easily connect to the servers. I pulled the IP address that my win xp desktop uses to connect to the servers and used it to connect to the servers with my mb as laid out in the guides on macrumors. I can see the servers and open or copy documents fine (i.e. it reads the server fine). I also can access the internet and the e-mail server fine. However, each time I attempt to write to the servers (copy a document, even save a doc that I have opened), it fails. It usually starts a copy dialogue and then either gives me an error message saying that I can't edit because I don't have access, or the connection is bad... etc. It will usually place a 0 kb or 4 kb file with the correct name on the server, but no data. Anyone else have this problem/know a solution? Thanks in advance for the help!