Install ubuntu Linux directly onto hard drive via a bridge

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http://askubuntu.com – the windows XP 32-bit on my laptop recently died and I want to install linux now. The problem is the laptop has no cd or floppy drive anymore and is not able to boot from USB. I borrowed a "bridge" from a friend, which allows me to connect the hard drive to the USB-port of my other laptop(win 7 64bit) which then recognizes it as a hard drive. How can I get a bootable OS on this hard drive? I have tried installing it the usual way and just select the other hard drive, but my other laptop won't open the 32bit installer. But I need a 32bit OS for my old laptop (HowTos)