How can I put an ISO onto a HDD?

[unpealableorange]

Hi guys, I need a bit of help at the moment. I'm all out of Memory sticks and I don't have a big enough DVD to burn an ISO onto so I can boot from it. The only thing I have are Hard drives so I'm looking to make a bootable Hard Drive so I can install Mac OS X Snow Leopard. Can anyone please recommend me any decent software to burn the ISO on my Hard Drive.

Thank you In advance

 

[Samat]

You can unpack the ISO file with WinRAR or 7Zip for example to the root of the HDD. Not sure if there are any other loops you need to go around with Mac OS X.