You should be having the Application object and the Document object for MS
Word; and try this.

wrdApp.Options.DefaultHighlightColorIndex = wdYellow
With wrdDoc.Range.Find
.Text = strSearchString
.Replacement.Text = strSearchString
.Replacement.Highlight = True
.MatchCase = False
.MatchWholeWord = False
.Execute Replace:=wdReplaceAll
End With

I have modified the code around find and highlight..and posted..Please check
and feedback..

If this post helps click Yes
---------------
Jacob Skaria


"Raj" wrote:

Hi,

When I run the following sub from Word, it highlights all the instance
of the input string. However, when word is invoked from excel, a word
document opened and the sub is called, the word "find" is highlighted
and "Argument not optional" error appears.

Sub HighlightWord()
Dim rDcm As Range
Set rDcm = ActiveDocument.Range
rspFind = InputBox("Input the string for highlighting")
With rDcm.Find
.Text = rspFind
While .Execute
rDcm.HighlightColorIndex = wdYellow
Wend
End With

End Sub

Please help. Thanks in Advance.