what are equipment suggestions for ultra low cost in-situ-flashing NIC based PCI option ROM way to do things?

#1: RTL8139 with 32 pin socket such as “El Cheapo” LCS-8038TXR7 by Longshine with part# “SST39SF040-70-4C-PHE” 5 Volt, 64 KByte, flash ROM by SST plus ZIF socket 32 DIL / DIP (most expensive being the ZIF socket, total cost below €15)