I have also had a nightmare with PXE booting an HP5750 but have finally had some luck. Had to inject the most recent drivers for the broadcom netxtreme ( including vista .inf and .sys and XP .inf and .sys) onto the landesk server, plus added to the the PEBOOT.img from the console. This updated PEBOOT.img then had to be updated on all our PXE rep machines. This allowed me to boot to winPe, but then trying to capture an image would leave the machine in the 'do not touch' screen with nothing happening. Found from the advanced edit option on my capture script that landesk maps drives h: and i: for tool use, but the DC5750 has media card readers that are already mapped as far as h: . Therefore i altered the script to map j: and k: drives and it now loads the winPE menu.