Hi Jay,
I don't know if this helps/apply in your case but I remembered that there is a linux script for flashing the 82573E EEPROM that uses ethtool:
http://e1000.sourceforge.net/files/fixeep-82573-dspd.shJust my 2 cents.
Best,
0xfede
EDIT:
a couple of dumps that I found on the internet of 82573 EEPROM:
Offset Values
------ ------
0x0000 00 0e 0c 4c 50 18 00 02 ff ff 01 20 ff ff ff ff
0x0010 92 c3 03 26 0b 64 76 11 86 80 76 10 86 80 04 b2
0x0020 dd 20 55 55 00 00 90 2f 00 32 12 00 20 1e 12 00
0x0030 20 1e 12 00 20 1e 12 00 20 1e 09 00 00 02 80 00
0x0040 0c 00 a6 93 0b 28 00 00 00 04 ff ff ff ff ff ff
0x0050 ff ff ff ff ff ff ff ff ff ff ff ff ff ff 02 06
0x0060 2c 01 00 40 10 12 07 40 ff ff ff ff ff ff ff ff
0x0070 ff ff ff ff ff ff ff ff ff ff ff ff ff ff c4 57
Offset Values
------ ------
0x0000 00 0a e4 3e ce 74 30 0b b2 ff 51 00 ff ff ff ff
0x0010 53 00 03 02 6b 02 7e 20 aa 17 9a 10 86 80 df 80
0x0020 00 00 00 20 54 7e 00 00 14 00 da 00 04 00 00 27
0x0030 c9 6c 50 31 3e 07 0b 04 8b 29 00 00 00 f0 02 0f
0x0040 08 10 00 00 04 0f ff 7f 01 4d ff ff ff ff ff ff
0x0050 14 00 1d 00 14 00 1d 00 af aa 1e 00 00 00 1d 00
0x0060 00 01 00 40 1f 12 07 40 ff ff ff ff ff ff ff ff
0x0070 ff ff ff ff ff ff ff ff ff ff ff ff ff ff 4a e0