Voici une méthode
Sub xx()
Dim xx As String
Text = "<Request ID=""{1111-000000000}"" DATE=""07/11/2007"" TIME=""03:00:13:448"" ><GO Name=""LGSM.GetAlias"" >" _
Text = Text & " <GA Name=""MSISDN"" Type=""MSISDN"" Value=""+33664076187"" />"
Text = Text & " </GO>"
Text = Text & " <GO Name=""inParameters1"" Type=""inParameters"" Id=""0"" >"
Text = Text & " <GA Name=""Alias.Type"" Type=""Alias.Type"" Value=""GWALIAS"" />"
Text = Text & " </GO>"
Text = Text & "</GO>"
Text = Text & "</Request>"
text1 = "<GA Name=""MSISDN"
text2 = "Value=""+33"
pos1 = InStr(Text, text1)
tmp1 = Mid(Text, pos1)
pos2 = InStr(tmp1, ">" )
tmp2 = Left(tmp1, pos2)
If InStr(tmp2, text2) Then
wscript = "ligne : " & tmp2
End If
End Sub
il y a surement plus simple mais ça fonctionne