How are you performing the copy? I had some fun as well when I first tried to do that with many different servers. It turned out to be all in the syntax.
Try this in a sub
------
Public Sub CopyMe()
dim filesys, Target, Source, ServerName
' change the variables to suit your needs
Target = "\vol1\pubacc\common\apps\client"
Source = "\\NBA_CEN\vol1\pubacc\common\client"
ServerName ="NBA_TEMP"
set filesys = CreateObject("Scripting.FileSystemObject"

' Creates a instance of the filesystem object as filesys
' so it can be used.
'Use filesys.Copyfile to copy a single file.
'Use filesys.CopyFolder to copy folders and all
'their sub contents
filesys.Copyfile Source, "\\" & ServerName & target
'filesys.copyfolder Source, "\\" & ServerName & Target
msgbox "all done"
' Clean up
Set filesys = nothing
End sub
-------
Hope that helps out!