Try this. It will check to see if the file already exists in the destination folder, and if it does will check if the file is read-only. If the file is read-only it will change it to read-write, replace the file, and make it read-only again.
Const DestinationFile = "c:\destfolder\anyfile.txt"
Const SourceFile = "c:\sourcefolder\anyfile.txt"
Set fso = CreateObject("Scripting.FileSystemObject")
'Check to see if the file already exists in the destination folder
If fso.FileExists(DestinationFile) Then
'Check to see if the file is read-only
If Not fso.GetFile(DestinationFile).Attributes And 1 Then
'The file exists and is not read-only. Safe to replace the file.
fso.CopyFile SourceFile, "C:\destfolder\", True
Else
'The file exists and is read-only.
'Remove the read-only attribute
fso.GetFile(DestinationFile).Attributes = fso.GetFile(DestinationFile).Attributes - 1
'Replace the file
fso.CopyFile SourceFile, "C:\destfolder\", True
'Reapply the read-only attribute
fso.GetFile(DestinationFile).Attributes = fso.GetFile(DestinationFile).Attributes + 1
End If
Else
'The file does not exist in the destination folder. Safe to copy file to this folder.
fso.CopyFile SourceFile, "C:\destfolder\", True
End If
Set fso = Nothing