I have an asus 1215N netbook (No CD drive), currently running ubuntu 11.10. It's all working great, but time comes when the man needs some retro gaming, and well... I need a windows on the same machine now. I've tried WINUSB and creating a bootable USB using a friend's windows machine, both failed. I have managed to boot from the USB but the windows installer keeps telling me it's lacking drivers (which is not true, because I have installed Windows from that .iso on a different pc on a different occasion) or wouldn't recognize my hard drive. None of the answers I've found on the forum so far seem to be quite relevant. It just seems like I'm stuck with ubuntu 11.10, and according to what a lot of the answers to similar problems suggest, the best way to go about that would be to install windp
Here's a tutorial on getting it working without more hardware. It's pretty step by step. A user on another thread referenced it as also working for XP, although it targets Vista/7.
Try using a CD instead of a USB drive (a USB CD drive), I'm not sure that Windows officially supports USB installs. I know they don't support windows installed on USB. Worst comes to worst, you may need a CD or USB drive with some SCSI or SATA drivers on it for your hardware.
Here are the steps, in case you didn't know:
Burn the ISO to a CD.
Use a partition manager to create a new windows partition.
Then you will need:
Just boot up with the windows CD and install it to the new partition. Then, boot your linux live CD and re-install grub and boot into linux. Just run a