I'm just going through this exercise...
I installed the BASE package to E:\UBCD4Win360\plugin\DriverPacks.net\BASE, then I run DPs_BASE.exe, and switch it to BartPE, but when I try to have it download the drivers in UpdateChecker, I get an error telling me the .7z file is currently unavailable. I get the same for all of the packages.
I've been able to manually download the .7z file though... - Something broken on the server? (I've no firewall blocking).
I was going to try and manually install it, but cant see where to drop the files.