i know nothing about that installer.
and i know of no installer for 3.60m33+ that needs no homebrew psp to complete the installation process.
On a slim you will need a magic stick that installs a custom firmware equal or bigger to 3.60
//EDIT try to search for a TOTALNewbieasyInstaller ... that should be able to install you 3.71m33 on your PSP.
from there you can upgrade.
P.s. mrdudes seems to be more of an easy copier then an installer

Sorry, I thought the TOTAL Newbi Installer was Mrdudes. I have the TOTAL Newbi Installer, but it doesn't come with a readme. Do I just have to put those files that are in PSPSlimPan.rar in my other memory stick, make the Pandora battery(that I learned you can make w/o a homebrew PSP), put them both in my PSP, and it starts the installation? Please reply back.