Of course you do can both of those things. I can't imagine why anyone would want to bold an entire document, though, let alone all documents in a folder; that suggests you're specified the wrong font. It would have helped, though, if you'd taken the time to specify the scope of the task from the outset.
Code:
Sub ReformatDocuments()
Application.ScreenUpdating = False
Dim strFolder As String, strFile As String, strDocNm As String, wdDoc As Document
strDocNm = ActiveDocument.FullName
strFolder = GetFolder
If strFolder = "" Then Exit Sub
strFile = Dir(strFolder & "\*.doc", vbNormal)
While strFile <> ""
If strFolder & "\" & strFile <> strDocNm Then
Set wdDoc = Documents.Open(FileName:=strFolder & "\" & strFile, AddToRecentFiles:=False, Visible:=False)
With wdDoc
With .Styles(wdStyleNormal).Font
.Name = "Arial"
.Size = 14
.Bold = True
.ColorIndex = wdDarkBlue
End With
With .Range
.Style = wdStyleNormal
.ParagraphFormat.Reset
.Font.Reset
End With
.Close SaveChanges:=True
End With
End If
strFile = Dir()
Wend
Set wdDoc = Nothing
Application.ScreenUpdating = True
End Sub
Function GetFolder() As String
Dim oFolder As Object
GetFolder = ""
Set oFolder = CreateObject("Shell.Application").BrowseForFolder(0, "Choose a folder", 0)
If (Not oFolder Is Nothing) Then GetFolder = oFolder.Items.Item.Path
Set oFolder = Nothing
End Function