Installing via USB help

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http://forums.fedoraforum.org – I'm trying to install f18 via USB stick on a windows 7. This is a fairly new method to me and ive bungled a few attempts. basically i've downloaded the dvd.iso and its larger than 4GB so im using an 8GB stick. im trying to do this from a windows machine so im actually clueless. What next? Thanks in advance for the help (HowTos)