Very Confused on my Raid.

Hello Everyone,

Alright..let me just say this whole raid thing isn't going my way.. i want a raid0' I was told these things where easy to set up 1 2 3 and your done..I think they are wrong' .. I got 2 sata..160 wd drives that i want to raid together..but cant seem to get it to work.. My Computer sees two hard drives one that i cant format ..and one that has my operating system on it.. the one that i cant format is 291 which is odd since its only a 160Gig Drive,, Every time i try something either windows..dost boot up or my Graphic card Goes into 4bit which is extremely annoying. Bios shows that it is a both hard drive are in a strip Raid boots up..But..shows two hard drive im lost for ideas...ive messed with it for two today the more i mess with it the more i screw my system up ..I am working with a clean windows right now(Windows XP)..due to the fact i had to reformat 3 time in the Process of doing this.

Im Running on a MSI P6n Sli 650i Board
8800GTS
Quad 6600
2gig of DDR2
550 cooler Master Powersupply


Thanks

the instructions of msi i guess...its very hard to follow and dont really get how to install them in the bios'???? to many nivida drivers i guess..