check if your NIC's are supported by vmware on the HCL list
http://www.vmware.com/resources/compatibility/search.php
if not you will have to go on the website of that NIC manufacturer and see if there is any support for vmware
check if your NIC's are supported by vmware on the HCL list
http://www.vmware.com/resources/compatibility/search.php
if not you will have to go on the website of that NIC manufacturer and see if there is any support for vmware