Upgrading iMac from 10.5.8 to Mountain Lion

Hi there,
I have an old Mac (but not hat old) for which I am looking to upgrade to Mountain Lion. So far not possible, I got recommendation to upgrade frist to Snow Leopard then to ML, but cannot succeed finding or even buying software.
How should I proceed?
Thanks for feedback, below iMac HW/SW info
Hardware
  Model Name:     iMac
  Model Identifier:     iMac7,1
  Processor Name:     Intel Core 2 Duo
  Processor Speed:     2 GHz
  Number Of Processors:     1
  Total Number Of Cores:     2
  L2 Cache:     4 MB
  Memory:     4 GB
  Bus Speed:     800 MHz
  Boot ROM Version:     IM71.007A.B03
  SMC Version (system):     1.20f4
  Serial Number (system):     QP7430UDX85
  Hardware UUID:     00000000-0000-1000-8000-001B63A95BEC
Software
  System Version:     Mac OS X 10.5.8 (9L31a)
  Kernel Version:     Darwin 9.8.0
  Boot Volume:     Macintosh HD
  Boot Mode:     Normal
  Computer Name:     Ordenador de Christine Vassort
  User Name:     Christine Vassort (krisztie)
  Time since boot:     12 days 10 minutes

Call Apple and purchase the install DVD for Snow Leopard
After installing Snow Leoppard update to 10.6.8 to get App Store for Mountain Lion
Using the App Store purchase, download and install Mountain Lion.
Prior to stating the upgrades make sure to take a backup
Allan

Similar Messages

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