Cant play my games ive downloaded

This website will show you how:

http://boardsus.playstation.com/t5/PSP-Media/ptf-Psp-themes-EASY-TO-DOWNLOAD/td-p/31742821

the file is wrong , you should download the file again

go to a website that caters psp themes, you can google it if you want, then download the themes, save it on your mem stick, make sure that you copied it on the correct folder, you will see a theme folder. disconnect you psp, then go to settings on your psp then theme settings, there you will see your installed theme.

connect your psp to your computer using a USB cable and activate the usb connection on the psp system under settings menu. go to my computer on your desktop or laptop, find the psp drive and double click on it. click on the PSP folder, you will see a folder name called THEME. this is where you download and save psp themes to.
Use this site: http://download.qj.net/PSP-Themes-PSP-/catid/538 to download psp themes. please save the file to ptf file to your themes folder on your psp as I have described above. disconnect the usb cable and check on the themes.

You don't have to create a themes folder on the on the memory stick duo, it is already created on the memory stick duo, all you have to do is to just connect your psp to your computer and activate the USB connection under settings on your psp, if you have firmware update 5.00 or higher, there is a feature called USB auto connect under system setiings which automatically switches to USB mode when you plug in a USB cable to your psp and your computer.
STEPS TO DOWNLOAD THEMES TO YOUR PSP.

1. connect your PSP to your computer, go to MY COMPUTER on your desktop and click on the drive that represents your PSP.

2. double click your PSP drive and navigate to PSP folder and select THEME under the folder.

3. Now copy and paste this link to your browser to download many themes for your PSP: http://dl.qj.net/index.php?&catid=538&name=PSP-Themes-PSP-&p10=5

4. select the file you want, click on download, depending on your browser, click SAVE when you are prompted to RUN or SAVE the downloaded file. Please select the PSP drive under MY COMPUTER and select PSP, navigate to the THEME folder and save the file to this folder.
Now disconnect the PSP from your computer and select THEME SETTINGS on your PSP, select THEME, navigate to the available themes and you will see a preview of the theme, select apply to use the new theme.

PLEASE RATE ME.

make sure your're downloading to correct folder or it will not show under themes.the folder is psp then theme and has to end with .ptf

There are actually a lot of themes running around the internet now...just type in your search bar PSP themes. How, for the location of the themes, just put it in your themes folder on the memory card of your PSP>>ms0:\PSP\THEME (ms0: meaning the root directory of your memory card)

i want game

Upgrade before downloading, other wise you shouldn`t upgrade at all.

Go to www.playstation.com and select your country, then select PSP. You can find all kinds of instructions for how to do Internet, download and a whole lot more.