lol ok this is copied and pasted from a different site cause i've got someone else asking me this to. let me know if it helps, and if not, i'll be happy to help you out.
you're going to need to put the prx in your seplugins folder, enable it in recovery mode, then once you've done that, plug your psp directly into the computer - don't use a usb hub or something. once you plug it in, it should say found new device. install the driver that's in the folder you downloaded. then after the driver is installed, unplug your psp, start the remotejoy program on your computer, plug your psp back in and the display should pop up in the window.
hope you can get it to work.





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