Raid help

Hi there folks! I am about to create a filesharing server which will have the following characteristics PIII-350 128 MB ram HD1 : 10 GB HD2 : 30 GB HD3: 30 GB The whole idea is to have SuSE Linux 7.2 on HD1 and make HD1 & HD2 Raid1 with Software-Raid to have complete rebundancy. I have never done this before. I would really appreciate any good manual, site, notes, www pages that you could recommend. I am feeling very nervous about this since I have never done anything similar in my life. Thank you all for your help!!!!!!! Chris