I've read some posts about people not being able to install with the patched DVD, and I couldn't either (kept getting SAM I/O and hfs_mountroot errors), so I'm posting this information in the hopes that it will help someone out. This is NOT a step by step tutorial; it doesn't contain the exact commands you need to enter and such, but I expect that anyone who actually needs to use this method has already done extensive research in OS X86 (chain0, diskpart, etc.)
I used the 8f1111a 10.4.3 developer dtk dmg, converted to iso, and patched with JaS's 4.2b patch.
Here's what I did:
First, I used diskpart to create a primary partition of type "AF" in some unallocated space on one of my drives.
Next, I mounted the ISO image of the patched DTK DVD in Daemon-Tools, and then mapped that drive to a newly created VMware machine (VMware's own ISO option won't work with the HFS+ partitions on the DVD). It shouldn't matter what profile you use (I used the FreeBSD one). Most importantly, I told VMware to use the physical hard drive partition I created previously, instead of an image file.
Thus, I could simply boot off the DVD inside VMware, use the Disk Utility to format the partition (NOT the entire disk), and install OS X normally.
After that, I simply had to copy the chain0 file to my boot partition root and add it to my boot.ini. I restarted, and selecting the "Mac OS x86" entry in the Windows bootloader worked perfectly.
This was actually verified by me; I did it on a Dell Dimension 8200 with a 160GB HD containing Windows and a 40GB containing my OS X installation. There was already another data partition on my 40GB, and I was able to keep it intact. I had some trouble when I forgot to enable the second disk in the BIOS (cause it works fine in Windows anyway), and the chainloader wouldn't find OS X, but the entire process should be the same (and easier) for single disk setups.