On my local subnet, I have two domain controllers A and B. A's roles include domain controller, primary DNS server, DHCP server B's roles include domain controller, secondary DNS server, WDS server ( I authorized B as a DHCP server) My WDS server is running in native mode. I created a boot image and an install image when I first configured my WDS server. Then I created a capture image from the boot image because I've set up a model WinXP workstation and plan to upload its image to my WDS server later on. I allow my WDS server to accept both known and unknown clients Then I tried to PXE-boot the XP workstation, but I got the following error: PXE-T01: File not found PXW-E3B: TFTP Error - File not found After getting the same errors several times, I ended up installing another WDS server on A. But this time, I got this error: PXE-E55: proxyDHCP service did not reply to request on port 4011. In both cases above, the XP workstation can get DHCP offers. However, in the second situation (A is also a WDS server), it took a long time to get the DHCP offer. Again I googled several hours and I tried to add DHCP option 66 (BootServer) to my scope, where I gave the IP address of B. (DHCP option 60 PXEClient was already there, but I'm not sure if it's installing WDS on A that makes that happen) . But I still get the same error PXE-E55 and it still took a long time to get the DHCP offer (I also got the same error when I uninstalled WDS from A) Then I deleted both DHCP option 66 and 60 from my scope, I ended up getting the same error (File not found) again as that in the first case. (I guess the XP station must have failed to locate a PXE server in the first case) I even tried to pre-stage the XP client by adding it into Computer container on B. ( On B, I first opened dsa.msc and choose New/Computer. The wizard first asked me to give a name for the computer I'm adding, then by hitting the Next button, I filled in the guid of the computer. However, on A, the Next button is missing and instead there's a Finish button and I could not go any further) I'm new to WDS, so could anyone help me out? Thx yifli