There seems to be more and more people out there trying to use remote joy and are having problems so I thought I might as well re-make my old tutorial..
What is RemoteJoy?
In brief RemoteJoy is an old plugin that enables you to use your PC monitor to view your PSP's screen and/or control your PSP with a keyboard.
Things to note:
This will not work with Mac or Linux (i think) operating systems as well with older/outdated PC's. I have personally tested this with PCs running Windows XP and one with Windows Vista 32 bit (all have ran fine). This will not run well if at all on Vista 64 bit.
You will need a PSP with CFW. 5.00 M33-6 and the Custom Firmware Enablers do work. I still don't know if this will works with any type of Gen firmware, but I will find out. (if some one could clarify and message me there will be karma given

).
For this tutorial I will be using Windows Vista 32 bit and a PSP slim running 5.00 M33-6.
(trying to make it noob friendly)
First, Download Here.
Once you've extract the archive you should see these three files
Click on PSP_Type_B_driver (to install the necessary driver to your computer)......
This screen should come up
Click Next..

Accept & next (might as well read it).
It will then install the driver.
Now we need to install the plugin for the psp. This is extremely simple (like the everything els lol) because of the easy installer.
Go back to the original three files and click on RemoteJoyLight application.

(the application tells you everything, but for the slower people.....)
At this time you should plug your psp into your computer. Click browse in the easy installer and find the drive for your psp and push "Install". If you have never installed a plugin before you will be fine but if you have it will ask to remove your existing vsh.txt and game.txt. Hit "No to All" when it pops up and manually go to your seplugins folder and add this line to both of them:
ms0:/seplugins/remotejoylite.prx 1
Now Enable the plugins and connect your psp to your computer. It will now tell you it is installing a driver, so let it do its thing. When it's done this will pop up in the lower right hand corner of your screen:
If your running XP, a window will pop up, but just do as it says and you will be fine.
Now go back to the original three files and click on the RemoteJoylight folder and launch the application
You should now have a little window opened with your psp screen on it, good job.
There are a few more things you can do with it, but it's getting late so I will post it up a little later. If anyone finds something wrong send me a message (as I did it fast)
Download Here.