Intel PRO/100, PRO/1000 Drivers
Intel e100 and e1000 drivers are on the mainline Linux kernel tree for a long time now. You should use the drivers that come with the kernel, unless you do know better. This is particularly true for the e1000 driver.
Intel(R) PRO/10/100/1000/10GbE Drivers
- The drivers home page - http://sourceforge.net/projects/e1000/