UEFI install settings

Hi. May you provide info how did you installed Project Sputnik? I didn't want to wait for non-US release, so bought XPS 13 with Win 8 preinstalled and would like to have dual boot.

How to set up XPS 13 BIOS to recognize flash drive with Project Sputnik (or plain Ubuntu 12.04/10)? I had partial success with 12.04 and legacy mode and 12.10 and UEFI without secure (and legacy option rom). But in both cases I had to use Boot Repair to get it working. Did you find simpler solution? In UEFI mode without Legacy option ROM I don't know how to set up Boot option for Flash drive and didn't find any advice.