If you buy two hard drives SME automatically will set up RAID 1 mirroring, which has saved lots of people's bacon (including mine) over the years.
According to the Intel support site, the driver for the PRO/1000 GT card is supported by all versions of the 2.6.x kernel, so you should be with this choice.
Also, if you are running VMWare in a production environment, 4Gb of RAM might be appropriate, especially given the fact that the RAM appears to be pretty cheap.