seacue,
I listed the D-Link Card as an example of what a NIC is and because it is a good quality card. (It only runs $12.00 delivered.)
GigaFast has a 10/100 NIC that sells for $4.00 but I cannot see skimping on a $12.00 part since you will save in the long run with a good quality NIC.
Take Care,
Richard