Server research and design

I have started my hunt for server software and info to follow. Happened upon this article which seems perfect for me. basically, the current Blog is 1.0, I anticipate that the new server will host my 2.x Blog. I am using an older desktop unit that I've had for some time just to get started and will eventually either buy a server or build one. I like the building idea better. If anyone has any ideas, comments or suggestions please go ahead and comment. I will reply as soon as I possible can.