Vista - Just find the version of adobe reader

I would like to run a script against computers on the domain and list the
version of adobe reader that is installed if less than version 9.
Here is my script:

Const HKLM = &H80000002 'HKEY_LOCAL_MACHINE
strComputer = "."
strKey = "SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\"
strEntry1a = "DisplayName"
strEntry1b = "QuietDisplayName"
'strEntry2 = "InstallDate"
strEntry3 = "VersionMajor"
'strEntry4 = "VersionMinor"
'strEntry5 = "EstimatedSize"
If strEntry3 < 9 Then
Set objReg = GetObject("winmgmts://" & strComputer & _
"/root/default:StdRegProv")
objReg.EnumKey HKLM, strKey, arrSubkeys
WScript.Echo "Installed Applications" & VbCrLf
For Each strSubkey In arrSubkeys
intRet1 = objReg.GetStringValue(HKLM, strKey & strSubkey, _
strEntry1a, strValue1)
If intRet1 <> 0 Then
objReg.GetStringValue HKLM, strKey & strSubkey, _
strEntry1b, strValue1
End If
If strValue1 <> "" Then
WScript.Echo VbCrLf & "Display Name: " & strValue1
End If
objReg.GetStringValue HKLM, strKey & strSubkey, _
strEntry2, strValue2
' If strValue2 <> "" Then
' WScript.Echo "Install Date: " & strValue2
' End If
objReg.GetDWORDValue HKLM, strKey & strSubkey, _
strEntry3, intValue3
objReg.GetDWORDValue HKLM, strKey & strSubkey, _
strEntry4, intValue4
If intValue3 <> "" Then
WScript.Echo "Version: " & intValue3 & "." & intValue4
End If
objReg.GetDWORDValue HKLM, strKey & strSubkey, _
strEntry5, intValue5
If intValue5 <> "" Then
WScript.Echo "Estimated Size: " & Round(intValue5/1024, 3) & " megabytes"
End If
Next
Else
MsgBox "You have adobe 9 installed"
End

Thanks