The problem, as anguish noted, is the partition scheme. Mac OS X wants to install only on a GUID/GPT partition scheme, whereas Windows only likes Master Boot Record (MBR) as well as most Linux distros. There are some workarounds to get Windows on GUID, but they are complicated.
The easiest methods are to either modify the Mac installer so that it will allow installation to a MBR scheme (which is what I normally do) or to use gptsync to create a hybrid GUID/MBR scheme that will make both OS's happy.
When I use one of those methods, I can use the Chameleon bootloader just fine. Right now I have to install Windows before Mac OS for best results, but the two operating systems can be installed in any order, it's just easier that way.