Recreate deleted recovery partition in Lion

My iMac (27-inch, Mid 2011) came with Lion installed. I deleted the recovery partition when I triple booted with Windows 7, Ubuntu and Mac OS.
Is there any way to re-create a deleted recovery partition in Lion? I've read that you can download Lion from the App Store & write it to a USB using the Disk Utility.
I am currently dual booting with Mac OS X Lion (10.7.4) and Windows 7 (installed via Boot Camp).
Please give step-by-step instructions if possible.

Actually, have you tried the Internet Recovery Firmware mentions in the article I sent you before?
If you have a newer Mac system, then as long as you have the latest firmware updates installed you should be able to use Apple's Internet Recovery feature and can bypass the need for a local Recovery HD partition. Apple recently released new EFI firmwareupdates for mid-2010 MacBook and Mac Mini systems that enable Internet Recovery, but there are also updates available for newer 2011 Mac models that do the same thing. With the Internet Recovery enabled in the Mac's firmware, to use it you just need to restart with the Command-R keys held down. If there is no local Recovery HD partition available, then the system will ask you to join a network. You will need a Wi-Fi connection available that is secured with a WPA or WPA2 password (other forms of connection such as WEP and certificate-based authentication will not work), and then the system will download and boot from a recovery image file obtained from Apple's servers.

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