You said standalone - do you really mean eetech standalone? if so It's in the EETech product guide - page 41 for example in this version..
If you're actually trying to put WinPE on a USB stick, that's something you need to learn from Microsoft - for example
SafeBoot's first link should do the trick, and the process to get a clean WinPE environment won't change from Encryption product versions. Look for this section . Add EETech to a Microsoft WinPE V3 32-bit CD/DVD
The second link from SafeBoot is SCARY!!! It has some good data, but the author skipped a critical step that could leave the novice deleting the contents of the wrong drive in your PC. If you'd like to follow that guide, when you get to DISKPART, do the following in a cmd window, launching it with Run as Administrator, of course.
At this point, make an educated guess at which disk is your external media because you're about to wipe all data from whatever you select. This is also a great time to backup anything you may have useful on that drive as well. Now back to the cmd...
select disk ###
create partition primary
format fs=fat32 quick
Now, as mentioned, you simply copy the WinPE contents to the USB. If you've followed the guide mentioned above, you can do this after step 7b. Just copy the contents of C:\winpe_x86\ISO to the root of your external media. You can then create the iso for CD/DVD usage if you must.