RAID - Can I have two drives in RAID, and the other two standalone?

Hello

I have two drives;

1. Maxtor (SATA) 500GB
2. WesternDigital (IDE) 400GB

And am planning on buying two more drives (unsure of brand yet);

1. (SATA) 500GB
2. (SATA) 500GB

I am planning on making the two new drives RAID 0.

But I want to keep my other two drives seperate from the RAID setup. In other words, I don't want them in RAID. I only want my new drives in RAID.

Please tell me if this is possible (I have an ASUS P5K-E WiFi motherboard).

Thanks in advance,

Panarchy