Clean HDD & Load Mountain Lion when it had Leopard installed at purchase

Hi,
I want to reinstall my operating system to clean my laptop and maybe speed it up a bit.  When I install the OS I want to go straight to Mountain Lion rather than Leopard and then go through all the upgrades.  I understand that I can doing this if I do the following:
You can boot into your Mountain Lion Recovery partition (hold down the Command and R keys whilst booting), use Disk Utility to erase "Macintosh HD" (or whatever you've named your boot drive) and then reinstall a clean copy of Mountain Lion. You will likely need your Apple ID to install ML, so make sure that you've the ID name and password handy.
I just want a little reassurance that this is correct.  In my head I am struggling to see how I will log onto the app store for Mountain Lion if I have HDD.
Hope you can reassure me.
Mark

That is the correct procedure.  It will use your Apple ID and password to verify you have a license for Mountain Lion.
Apple might not let you purchase Mountain Lion from the App Store now that Mavericks has been released.  See https://discussions.apple.com/message/23497806#23497806
If you want to speed up your Mac you might consider jumping to Mavericks.  Apple claims, and people have been reporting, that is is noticeably faster than Mountain Lion.  If you purchase Mountain Lion it will cost you $19.95.  An upgrade to Mavericks is free.

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    Clinton

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    I have restarted my iMac and held down cmd R. I used disk utility to erase the HD. I tried to insatall OS X Mountain Lion and when I enter my Apple ID I get the message that "This Apple ID has not purchased Lion". This is interesting as when I check my purchase history at the App store it says I purchased Mountain Lion in July 2011. I am now stuck with an iMac that does nothing. Any suggestions?

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    Many thanks for your answer.
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    Path:            /Applications/Aperture.app/Contents/MacOS/Aperture
    Identifier:      com.apple.Aperture
    Version:         3.4.3 (3.4.3)
    Build Info:      Aperture-310022000000000~2
    App Item ID:     408981426
    App External ID: 12009533
    Code Type:       X86-64 (Native)
    Parent Process:  launchd [117]
    User ID:         501
    Date/Time:       2013-01-02 18:22:43.533 +0100
    OS Version:      Mac OS X 10.8.2 (12C60)
    Report Version:  10
    Interval Since Last Report:          26292 sec
    Crashes Since Last Report:           13
    Per-App Crashes Since Last Report:   13
    Anonymous UUID:                      94615913-F3B0-01D5-C740-D0C4474C62F7
    Crashed Thread:  0
    Exception Type:  EXC_BREAKPOINT (SIGTRAP)
    Exception Codes: 0x0000000000000002, 0x0000000000000000
    Application Specific Information:
    dyld: launch, loading dependent libraries
    Dyld Error Message:
      Library not loaded: /Library/Frameworks/PluginManager.framework/Versions/B/PluginManager
      Referenced from: /Applications/Aperture.app/Contents/MacOS/Aperture
      Reason: no suitable image found.  Did find:
              /Library/Frameworks/PluginManager.framework/Versions/B/PluginManager: no matching architecture in universal wrapper
              /Library/Frameworks/PluginManager.framework/Versions/B/PluginManager: no matching architecture in universal wrapper
    Binary Images:
           0x10b1b9000 -        0x10b90efff  com.apple.Aperture (3.4.3 - 3.4.3) <01A802BA-0100-3F80-947C-A8FEA4726352> /Applications/Aperture.app/Contents/MacOS/Aperture
           0x10bb2b000 -        0x10bb34ff7  com.apple.PhotoFoundation (1.0 - 10.17) <C40F985F-9C0A-389A-9E21-684EB0A5B160> /Applications/Aperture.app/Contents/Frameworks/PhotoFoundation.framework/Versio ns/A/PhotoFoundation
           0x10bbad000 -        0x10c0cdfff  com.apple.RedRock (1.9.4 - 310.33) <9B94495A-2267-3684-B6E8-9FE3D4B46495> /Applications/Aperture.app/Contents/Frameworks/RedRock.framework/Versions/A/Red Rock
           0x10c3d8000 -        0x10c45bfff  com.apple.iLifePageLayoutCore (1.0 - 200.9) <8AAC1EB9-5823-3624-A525-635C2A77C34E> /Applications/Aperture.app/Contents/Frameworks/iLifePageLayoutCore.framework/Ve rsions/A/iLifePageLayoutCore
           0x10c4bb000 -        0x10c4c0fff  com.apple.iLifePhotoStreamConfiguration (3.4 - 2.5) <906317D7-09FF-3B77-8F35-01BB74C0109C> /Applications/Aperture.app/Contents/Frameworks/iLifePhotoStreamConfiguration.fr amework/Versions/A/iLifePhotoStreamConfiguration
           0x10c4cb000 -        0x10c4fcff7  com.apple.iLifeAssetManagement (2.7 - 40.34) <E4E1A39C-E8AE-31D5-9C50-B392EBAD7447> /Applications/Aperture.app/Contents/Frameworks/iLifeAssetManagement.framework/V ersions/A/iLifeAssetManagement
           0x10c533000 -        0x10c540ff7  com.apple.iphoto.AccountConfigurationPlugin (1.2 - 1.2) <0F515DED-D77E-3E4F-876D-F5CE596A844C> /Applications/Aperture.app/Contents/Frameworks/AccountConfigurationPlugin.frame work/Versions/A/AccountConfigurationPlugin
           0x10c552000 -        0x10c5f5ff7  com.apple.MobileMe (13 - 1.0.4) <9A7FCC99-67CE-3F5E-98BB-9079B305087F> /Applications/Aperture.app/Contents/Frameworks/MobileMe.framework/Versions/A/Mo bileMe
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        0x7fff89fa9000 -     0x7fff8a133fff  com.apple.WebKit (8536 - 8536.26.14) <7C4D5DE6-7153-3E54-8D4F-BB2E9AE74878> /System/Library/Frameworks/WebKit.framework/Versions/A/WebKit
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    USB Device: Built-in iSight, apple_vendor_id, 0x8502, 0x24400000 / 2
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