Suppose you have a computer with just Windows on it occupying the entire disk. These instructions will follow this scheme.

Shrink your NTFS or FAT32 partition that Windows is sitting on to make room for a partition that Haiku will go on and format it as FAT32 for now (choose to the right, or after your Windows partition) using the great (and free) partitioning tool - Gparted (LiveCD)

After that, boot into Windows, grab a raw Haiku disk image , and use dd for Windows to copy a new Haiku image to that partition. So, uncompress the Haiku disk image to C:/ and put dd in the same directory. Go to 'Start/Run' and type in 'cmd' to bring up a console. Type in 'cd C:\', and then copy the disk image 'dd bs=512 if c:\haiku.img of=\\.\f:' (you may need to change f: to the actual partition you made).

After that's complete, we need to add Haiku to NT's bootloader since Haiku doesn't have a bootloader (yet). For this, we'll use bootpart. Download this and uncompress it to C:/ again. Using the same console, type in 'bootpart 1 LBA Haiku Haiku'. The #1 signifies the Haiku partition. Use the list function to make sure you have the right partition. This process will make a file used to boot Haiku called 'Haiku' in C:/, and also add 'Haiku' to the NT boot loader. You can also edit C:\boot.ini to change the timeout of the bootloader to something more realistic, like 5 seconds.

You're not done yet actually, you have to make the partition bootable. I don't know of an easy way to do this, as it has to be done from either Linux or BeOS. The easiest route, would probably be to download a LiveCD like BeOS Max or Zeta . Once you've gotten your hands on one and burnt it, just boot off the CD. Right click on your desktop, and mount all your partitions. Open a terminal and type in 'df'. You can see where your Haiku partition is mounted. Then simply type 'makebootable /Haiku'.

Your system should boot now (if the hardware is supported). If you have any tips or gripes, leave them in the comments section!

*Note, if you install Haiku to your first primary partition you can bypass the makebootable step, and your machine should just boot Haiku.