Hi.I have question for you guys about raid-0.I have asus m2n-e mobo with raid controller on the board.Currently i have only one hdd ,it's WD 250gb 7200r 16mb cache.2 days ago i attached seagate 7200.10 500gb hd.I created in BIOS new array for them it was striping raid-0 config.In BIOS when i put those 2 hdds on right side in new array window it showed me after finishing only 465gb instead of 703gb.Then i installed fresh copy of win xp sp2, of course i installed raid drivers from floppy disk with clicking F6 button, installation went fine.In win xp in nvidia mediashield it says i have 2 drives first one is wd 238 gb...second one is 465gb seagate both striped (healthy etc...) i guess it's raid-0 config? Ok i started sisoft sandra 2008 and speed was about 110mb/s, is that ok? when i was using only 250gb wd speed was 55mb/sec.Both drives are SATAII/300.The problem is when i open 'my computer' or if go to 'total commander' it shows me only one drive C ,with capacity of 465.77gb, but in mediashield shows 2 drives one of 238, second 465.76gb, what raid-o array did? Win xp doesen't shows my hd of 238gb, how? is it because of difference in hdd capacity? it should be 238+465=703gb...or i am wrong? now i just have 465gb instead of 703gb.I went to computer management and there were nothing to format or to partition.It shows only one hdd letter C on 465.77gb on raid-0 controller, where did i lost 238gb?? .Second question .By your opinion, should i now after all this buy another 250gb wd 7200 se16, and then raid-o again, and to hope that i will see in windows 500gb instead 250gb striped? or should i only buy 750gb wd se16 or seagate barracuda 7200.11 750gb 32cache and put it as first system hdd? and second 250gb wd to put only as backup without any raid-0, 1 10.Is speed on wd 750gb se 16 and barracuda 7200.11 750gb good enough not to think at all to try raid-0...mostly i'm using computer for internet,games, word,web and audio design.Thanks for reading all this