Installing 10.5.4

Boot using iATKOS 4.1i DVD
Before installing, run Disk Utility to

• Erase disk (remove old/inconsistent bootloader(s))
• Partition (GPT, not MBR)

Customize:

• iATKOS v4.1i Main System
  
• Darwin EFI Bootloader
• AppleSMBIOS netkas
  
• drivers:
  

AHCI SATA

Intel Pro/100 VE

Restore settings "from another Mac volume" (OSX-1-500G)
(Next time, skip "network and other settings", to avoid hang)

Result:

• boots 10.5.4 into unworkable fuzzy graphics

Install driver for my ATI Radeon HD 3650 (512M) using:

• boot safe mode (-x -v)
• searched InsanelyMac for "10.5.4 radeon 3650"
  
• installed new driver found here
  

This installs ATY_Megalodon.kext v 1.5.66 into:
/System/Library/Extensions/ATINDRV.kext/Contents/PlugIns/ATY_Megalodon.kext

Reboot, without safe mode, brings up all graphics modes.