Installed 4.1 on AOpen MP57-d
Installing ESXi 4.1 on AOpen MP57-d has been succeeded with custom oem.tgz for Intel 82578DC 8086:10f0.viewtopic.php?f=12&t=2194&start=0
What I did is just adding one line below each for pci.ids and simple.map.
10ea 82577LM Gigabit Network Connection
8086:10ea 0000:0000 network e1000e2.o
CPU: Core i5 M520
SDD: Intel X25-M 120GB
Thanks hardworker and people helped me.