Installing Lenny using usb stick

[Siju George <sgeorge.ml@gmail.com>]

Hi,

I tried to put the debian Lenny ISO image in a Usb stick using.

http://unetbootin.sourceforge.net/

But the installation shows error mounting CDROM.
I dont have a cdrom.

Where do I get usb install images for lenny and how do I write it to
the USB drive?

Thanks

--Siju