I pretend I didn’t see your last post, but Windows 7 USB/DVD Download Tool can be used to make bootable windows 7 DVD Installation.is very simple to use, here's your guide http://www.mydigitallife.info/2009/10/26/windows-7-usbdvd-download-tool-creates-and-makes-bootable-dvd-disc-or-usb-flashhard-drive-from-iso-image/
If I were you I would use Windows 7 90 days trial (100 days, if you count the 10 days you have to activate it). Click the following link to download the iso directly from Microsoft.