Well, i wanted to translate it anyway^^ But I'm not talking from zero up now, if you don't know how to do something, either PM me or look around in Insanelymac, almost everything's there, somewhere^^
The Thread you linked works for almost all the Cards, except ours^^ but NVDarwin works, so no problem^^
First things first:
Bios settings, see above, you need atleast Bios Version 08LA, previous ones are buggy for OSX
Boot R560-132, ignore "com.apple.boot.plist not found", press F8 if it tells you to, replace DVD with retail, wait 30sec, press esc and enter. After that, press F8 again, write "-x -v", boot (enter)
now it should load RetailDVD, slow but it should load, simply wait, i'd say 10min out of my mind^^
Select you Language, choose Diskutility from the top of the screen and format you drive, change options, GUIDE Partition Table, then partition the way you want it, choose FAT32 for later Windowsused Partitions, Mac extended jounaled for Mac partition(s).
Let it install, if it prompts an Error after it's finished (something about not able to boot), ignore.
Now, reboot, insert 132CD, press F8, Esc, enter 80, enter, write "-x -v"
It should boot, now you can run all Softwareupdates, until you are at 10.5.6, you can always boot like that now, If you got 10.5.6, install NVDarwin.kext from Post 5 (reboot one time with "-f" after that), that will enable Video and lets you boot without bootflags, but you'll still need Boot132CD,
Your system will run now, you can choose various Bootmethods, like Chameleon, or keep Boot132... If you got a bootloader, able to load modified DSDTs you can Delete NVDarwin.kext and use Xanderons patched DSDT. Will enable Video too

Thats enough up to now