Upgrading Hardrive/ Re-installing Snow Leopard Macbook Air

I just bought a bigger hard drive for my macbook air. I already backed up with time machine. My plan was to install the new hard drive, install snow leopard, and then do a time machine restore. My problem is I own the snow leopard disk but the macbook air doesnt have a dvd drive. How do I re-install the OS without a DVD drive and does my plan make sense?
Thanks

If you want to install Snow Leopard on your Air, Remote Install OS X is designed to accomplish that:
http://support.apple.com/kb/HT2129
http://docs.info.apple.com/article.html?path=Mac/10.6/en/21219.html
http://support.apple.com/kb/HT1777
You need another computer with an optical drive, but it can even be Windows: http://support.apple.com/kb/DL112
After Snow Leopard is installed, it will present the option to migrate your account and settings from the TM backup.

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    htfromgrantown wrote:
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                                  [click on image to enlarge]
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