Hi.
You only need to edit the simple.map file and pci.ids and add
your 8086:10de value to those files.
This example assumes that you have deterimed the PCI ids for the hardware you want to add to the ESXi PCI database files and that you have been able to access the console of ESXi.
1. cd /tmp
2. tar -zxvf /bootbank/oem.tgz (assuming you already copied the modified file to the bootbank)
3. vi etc/simple.map
--- add the necessary PCI data for your devices
4. close vi - press ESC and enter :wq
5. vi usr/share/hwdata/pci.ids
-- add the necessary description for your devices (this will be displayed in the console and VI Client)
6. close vi - press ESC and enter :wq
7. tar -cvzf oem.tgz etc usr mod
8. rm /bootbank/oem.tgz
9. cp /tmp/oem.tgz /bootbank/oem.tgz
10. cd /bootbank/
11. chmod 755 oem.tgz
12. reboot the host
You can also find the full instructions for the customizing of oem.tgz
here
http://www.vm-help.com/esx/esx3i/customize_oem_tgz.php