Just a quick note to let you know that there is a recognized performance issue in Windows Vista when copying files from a network source to the local workstation.
You may see a "Calculating Time Remaining" message indicating "0 minutes remaining" and get nowhere with the process.
If you are having issues with this, then there is a Knowledge Base article and a hotfix for you!
Microsoft KB931770: The copy process may stop responding when you try to copy files from a server on a network to a Windows Vista-based computer.
Give Product Support Services a call for the hotfix!
Microsoft Small Business Specialists