PXE packet driver is the NDIS driver that you can get from your card/computers manufacturer. You can replace that driver with a newer one and try it out.
For instance I went to Dells' web site and downloaded the NIC driver for my machine. It unzipped all the drivers to my hard drive before running the installer. In the path: C:\dell\drivers\R132254\DOS\NDIS2 I found a replacement NDIS driver for my NIC that I could supply the console to update the driver for my machines using that NIC.