This is how to create a booting usb from windows without installers or anything else.

1) You will need:
Bootsector files (this files are taken from chameleonb build, they are respectivly - Mbr.bin - boot0 and bs32.bin - boot1f32).
Preferably latest build of chameleon. Download the tar.gz file and unpack with 7z.

2) Lets begin:

BACKUP ANYTHING IMPORTANT ON THE FLASH DRIVE.
- You have to have a some form of partition on your USB, so windows can assign a letter to it. If its empty format in FAT32
- Unpack the bootsector arhive and run through CMD this command:
"makeusb X:" (WHERE X IS THE LETTER ASSIGNED TO YOUR USB)
- Unplug the drive and put it back in
- Now you should have a fresh (empty) partition. All you have to do is unpack the trunk build you downloaded in the root of the USB drive.
- You should copy boot from /usr/standalone/boot to the root folder of your USB. So that there are atleast 2 folders - Extra/usr and 1 file - boot (not extension).
- You're set, now create your config files/put your extensions/adapt your themes

PROS:
Every modern pc/mac can read FAT32
You can use the USB drive for files (it may sound weird, but compared to HFS+ the devices that support it are much more)
You don't Mac for creating the bootloader

CONS:
FAT32 is slow, atleast slowER compared to HFS+

Source

Remember, try hackintosh by your own risk :)