Unfortunately Microsoft Windows* Server 2008 does not support the Intel(r) Network connection I217-LM. There may be in-box drivers with the operating system installation.
download from there, and unzip the files with 7zip, and then manually install the driver.
FINALLY worked for me with 2008 "r1" (64-bit)
you may have to dig a little more for 32-bit, but should be similar vintage
more to choose from here; http://www.helpjet.net/files-Intel-I217-LM.html
Did you ever find a solution for this? I am having the same issue.