there're some strange problem with my PC, for unknown reason I can't enable UDMA for my DVDROM and my CDRW, even though I choose "use DMA if available" windows XP only use Multiword DMA 2, I check my DVD ROM and CDRW manual, and it says that my DVDROm supports UDMA 66 and my CDRW support UDMA 33, I already try installing the latest VIA chipset driver but they both still in Multiword DMA 2, how can I use UDMA intead Multiword DMA for my optical drives? is this windows XP problem? I've try reinstalling winXP but also doesn't work, help me please... I'm getting confuse here.. 
oh and btw my DVD ROM is Gigabyte GO-D1600C and my CDRW is ION CDRW 52/32/52.
oh and btw my DVD ROM is Gigabyte GO-D1600C and my CDRW is ION CDRW 52/32/52.