Blue Storm + 3 Sata drives

Hi. I'm going to be purchasing a new system as follows:

DFI Lanparty UT NF3 250gb, Athlon 3400+ Newcastle, FSP Blue Storm 500W, (x3) 160gb Seagate Barracuda 7200.7 SATA drives (1 for OS, other two for RAID 0 - video editing scratch disk, etc. Possible upgrade to 4th Seagate to RAID 0+1 down the road)

Just read that Blue Storm only has 2 SATA connectors? Can I buy a splitter or some other connector to hook up all 3 drives, or should I just look at another PSU?

If I can use a splitter or some dual connector, will that hurt performace/efficency of the PSU and if so, could it lead to stability issues with my system?

Thanks, just checked those out. Seems like that will be okay, I was just worried about power loss or something. Just confusing, SATA power cables, SATA data cables, 4 pin molex, ughhh!! I just want to make sure when my system arrives, I don't have to run out and blow $20 for a stupid adapter at the local comp store (never buy from them!) Thanks!