Yes, they point me to this promisxp.exe driver when I had the A7V133, but I read it set "Promise ATA 100/RAID driver for WinXP", I'm afraid the A7V266-E has the same Promise chip, same Promise BIOS revision, and the driver is working prefectly now that I move to the A7V266-E.
A7V266-E
Athlon 1.2b @ 1301 (9.5x137Mhz)
Titan D5T cooler and 4 case coolers (just in case!)
512Mb DDR RAM (unbranded, 2x256Mb sticks)
Promise RAID 0 on 2 IBM Desktars 15Gb
CL Anihilator II (gForce 2 GTS 32Mb DDR)
CL Live! Platinium
Aopen Hq08 full tower case (300 What PS)
DVD and CDROM on normal IDE channels
Win XP Pro OEM