Making a bootable USB drive

Basically forcing a USB drive to act like a hard drive.
http://blog.mpecsinc.ca/2007/03/system-builder-tip-creating-bootable.html

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To enable the ForceFormReload registry key functionality, follow these steps:

Start Registry Editor.
Click the following key in the registry:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\11.0\Outlook
On the Edit menu, click Add Value, and then add the following registry value
Value : ForceFormReload
Data Value : Reg_Dword
Value Data : 1
Quit registry

Find the exact URL of a downloaded file

I used Firefox 3, I'm not sure if this trick works with Firefox 2.