I would write OS X on a USB stick and boot from it.

You will need:

- A working PC, which I'm assuming runs some version of Windows.
- A USB stick.

Follow these steps:

- First, get a `.dmg` of the OS X's version you need.
- Download the 15-days trial version of [TransMac](http://www.acutesystems.com/scrtm.htm).
- Backup any data from the USB stick. You are going to erase it entirely.
- Launch TransMac, locate the stick, right-click on it and choose `Restore with Disk Image`.
- Locate the `.dmg` image you downloaded and select it as the source.
- Once finished, push the stick in your Mac.
- Power it and keep pressing the `alt` key until some icon pops up.
- If you really erased the entire disk, there should be just one, and should be named something like "OSX Install".