you dont need to rename everything, just overwrite all the files with my updated ones...the _p are just addons that dont get loaded unless you want probably... (by renaming them)...just forget about them.
All you nee dto do to install, is unzip them to the HCE map folder, choose 10 pages (sections with the header [yadi yada]) and just delete the others until more than 10 pages are supported (presumably HCE v0.5)
I just suggested deleting all the [shader] sections as they arent as cool as the other sections, but its up to whatever you want (sometimes you can have 1 or 2 shader sections like in multiplayer maps)...just make sure you only have 10 [] sections