Putting together a Lower-Mid End Server

Hello everyone,

I am planning to "build" a "Server" for my small office use and need some
advice. One thing I know is that the Mobo will be Asus (no different brand
since the SP3G).

The outline of the configuration in my mind is like:

Single CPU in a dual-ready system.
1G DDR (possibly will end up with 2G)
Serial ATA in mirroring RAID config. (only reason for NOT SCSI: Too
expensive)
Intel (or AMD ??) cpu

Which ASUS MOBO? Which ASUS/Other components ?

The server will be running MSSQL server on WIndows 2000 or 2003 Server, and
storing + indexing user documents. ( 10 users)

Many thanks in advance,
-arifi