Hi Zoran
The Intel NIC should be fine in SME7, and with the addition of Darrell Mays Intel drivers, work fine in SME6.
I have a dual Compaq 10/100 NIC out of a DL380G1 that SME recognises fine (Intel chip). If you get desperate I can let you have this for a few bucks.
Check the system in case it need low profile cards, co in this case neither of these option will work (unless the new Intel comes as a low profile design).
Cheers
Graeme