Network Boot Troubles

I've tried several combinations, but have been unable to get network boot to be successful. I'll describe what I've tried and what happens, and hopefully someone can help me get up and running.

I download and run tftp32 from http://tftpd32.jounin.net/ on my server machine, which is connected to my home network with a 4-port DSL/router box.

My server address comes up as: 192.168.2.100,
so in DHCP Server settings, I put:
IP Pool starting address = 192.168.2.101
Size of pool= 3
Boot file = C:\Java\downloads\jnode\dev-march2\jnode\all\build\x86\netboot\nbgrub-rtl8139
WINS/DNS Server = 192.168.2.100
Default Router = 192.168.2.100
Mask = 255.255.255.0
Domain Name =
Additional Option = (150,(nd)/menu-nb.lst)

I save these DHCP Server settings, and set global options:
PXE configuration, translate Unix file, allows '\' As Virtual root
I set the TFTP server root directory to:
C:\Java\downloads\jnode\dev-march2\jnode\all\build\x86\netboot

My client is a Sony VAIO PCG-FXA32, I press F2 during bios bootup, and set Network Boot to highest priority (over hard drive).

Then on reboot, the client prints:

"Intel UNDI, PXE-2.0 Build 082
(C)...

For Realtek RTL8139(A/B/C)RTL8130 PCI Fast Ethernet Controller v2.11 (001205)
CLIENT MAC ADDR: 08 00 46 2F 6T AF GUID: 304CAAE0-3704-11D4-89A0-0800462F6EAF
CLIENT IP: 192.168.2.101 MASK: 255.255.255.0 DHCP IP: 192.168.2.100 GATEWAY IP: 192.168.2.100"

While the server prints:

"Rcvd DHCP Discover Msg for IP 0.0.0.0, Mac 08:.. as above
DHCP: proposed address 192.168.2.101
Rcvd DHCP Rqst Msg for IP 0.0.0.0, Mac (as above).
Previously allocated address acked.
Connection received from 192.168.2.101 on port 2070
Read request for file C:\...\nbgrub-rtl8139, Mode octet
C:\...\nbgrub-rtl8139 sent 211 blocks, 108000 bytes in 1s. 0 blk resent

And TFTP32 reports current action = : sent 211 blks, 108000 bytes in 1 s. 0 blk resent

My client does nothing further at this point, no printing GRUB at the top, no nothing, just the text remains there, and the server does nothing as well.

Have I forgotten something? Is my hardware not able to do a network boot? It looks like DHCP was successful..., but why no GRUB?

Any help is greatly appreciated.