Both do, infact support for SATA-II is coming from series 945 chipets. and the ones you mentioned were the very new ones.
and P5W represents 2 series 955 and 975, you have to specify which one? as P5WD2 is based on 955's and P5WDH are based on 975's.
also, you dont have to find written SATA-II, as SATA originaly came with 150Gb/s, whilst SATA-II is comig with 3Gb/s. so automaticaly assume its SATA-II
Intel Core2Quad 2.66Ghz 12MB L2-Cache
4096MB DDR Kingston Hyper-X
XFX 9600GT AlphaDog
Seagate 2 X 320GB SATA2
LG L246WH Flatron 24"