There is not any option about hard disk in bios, only a non-configurable page displaying internal HDD information. Does the dell client configuration tool give more options to control the bios? I don't have a Windows installed, so cannot easily try the dell client configuration tool.
Rename "A05I9300_SLIC.EXE" to "A05I9300.EXE" and try to flash from pure DOS or from WinXP (use LiveCD again)
under livecd it says to connect power and battery even though they are connected and under windows still asking for admin permission