I too have the Epox 8K7A+, with the 1.4 GHz 266 FSB T-bird (same FSB as yours) and this is what I set mine to:
SW2: CPU Ratio Selection- I left it at AUTO (Switch 5 OFF, Switches 1-4 can be on or off- it doesn't matter)
JP2: CPU Core Adjust- +0.V (Default) (Jumper on pins 1-6)
JP3: DDR Adjust (2.5V)- +0.1 (Default) (Jumper on pins 2-7)
JCLK1: CPU Clock Select- CPU 133MHz/DDR 266MHz (Jumper on pins 2-3)
JP5: Power Loss Recovery- Disabled (Default) (Jumper on pins 1-2)
JP13: Keyboard Power On Function- Enabled (Jumper on pins 2-3)
Technically, the RAID Administrator really only provides you with the means to reconstuct your Mirror (RAID 1) array is things go bad. If a RAID 0 Array goes bad, then either it won't boot or you lost all your data. All you need is in the BIOS anyway. I don't use it myself.
If you have the 1.13 T-bird, your FSB is 266 MHz (133 DDR), and uses an 8.5x multiplier (133 x 8.5 = 1130.5). If you have the 1.1 T-bird, your FSB is 200 MHz (100 DDR), and uses the 11x multiplier (100 x 11 = 1100).
Other tips: Go to the following sites and download the updated drivers:
http://www.amd.com/products/cpg/bin/- amddrvpk_120.exe
http://www.viahardware.com/download/index.shtm#4in1- 4in1432v.zip
http://www.highpoint-tech.com/370drivers.htm- 370raid_v1.2.0612_win98.zip
Only the drivers necessary for your board will install, so AMD's IDE driver will not be installed when you run AMD's amddrvpk_120.exe program. (Install VIA's drivers for that).
If you aren't going to use the onboard sound, don't bother installing the sound drivers for the Via 686B chip.
If you want to use Epox's "official" AMD 761, Via 686B, and Highpoint 370 drivers (and the onboard sound drivers), go to
http://www.epox.com/html/english/support/motherboard/drivers/download_ep-8k7a+.htm.
Also, don't forget to go to
http://www.epox.com/html/english/support/motherboard/bios/8k7a.htm and download 8k7a1606.exe to update your BIOS.
Good Luck.