Hi Judy,

1. Insert the charts/graphs into Word as linked objects instead of embedding
them. Select the chart in Excel, copy it and then, in Word, select
Edit|Paste Special and choose the 'paste link' option. This minimises file
size and also has the effect that changes to the source workbook will be
reflected in the document.

2. For that level of security, you should consider converting the document
to a pdf file using Adobe Acrobat or something similar.

Cheers

Don't know whether this helps or not, but it sounds similar to
something I have been struggling with. It's in a macro. Here is the
relevant part
.
.
.
 Set wbk = GetObject(tmplDoc.Path & "\BenefitChart.xls")
 wbk.Sheets("Sheet1").Activate
 With wbk.ActiveSheet
   .Cells(2, 2).Value = vGross
   .Cells(3, 2).Value = vPension
   .Cells(4, 2).Value = v401k
   .Cells(5, 2).Value = vSocSec
   .Cells(6, 2).Value = vHealth
   .Cells(7, 2).Value = vLife + vDeath
 End With
 wbk.Charts("Chart1").Activate
 wbk.ActiveChart.CopyPicture Appearance:=xlPrinter, Format:=xlPicture
 wbk.Saved = True
 wbk.Close

 Selection.Find.ClearFormatting
 With Selection.Find
     .Text = "Insert Chart1"
     .Replacement.Text = ""
     .Forward = True
     .Wrap = wdFindContinue
     .Format = False
     .MatchCase = False
     .MatchWholeWord = False
     .MatchWildcards = False
     .MatchSoundsLike = False
     .MatchAllWordForms = False
 End With
 Selection.Find.Execute
 Selection.PasteSpecial Link:=False,
DataType:=wdPasteMetafilePicture, _
 Placement:=wdFloatOverText, DisplayAsIcon:=False
.
.
.

Basically, I update the worksheet with new values, copy the chart as a
picture, then close it.
I find the spot in the document tagged "Insert Chart1", select it,
then
paste as a picture. Since the graph in the document is no longer
linked to the spreadsheet, it can't be manipulated, and any subsequent
changes I make to the worksheet have no effect on my document.

Hope that helps. Good Luck!

--Dave