It's pretty simple to setup, really.
- Find an i430fx BIOS ROM and put it in ROM/BIOSROM.i430fx.BIN
- Find an ET4000/W32 BIOS ROM and put it in ROM/ET4000_W32.BIN
Then start the emulator, tap the yellow text(or tap the Sel button or press the - button on the switch while it displays). Go to the advanced menu, into the CPU menu and set the architecture to i430fx. Then return to the main menu, choose to "Restart emulator and enter settings menu (save changes)" and then, after returning, go to the advanced menu, video settings. Set the VGA mode to "Tseng ET4000", the ET4000 extensions to "ET4000/W32" and the SVGA DAC mode to "Sierra SC15025".
Then save the settings and reboot to make it start running.
You will need to configure the hard disk for it first, so press Del to enter the BIOS menu while it's counting memory(although probably F1 the first time might work as well when it warns about the CMOS).
Then in the disks menu, choose the primary master and set it to Auto. Set the secondary master and slave to CD-ROM (Auto might work, though).
Then just press escape until you're back at the main menu and it asks if to save or discard. Choose save and let it reboot into your OS.