So, the very first thing you need to do is to download Adobe cs2 30 day trial.
and the Keygen.exe.

CLICK HERE TO DOWNLOAD ADOBE CS2 (tryout)
CLICK HERE TO DOWNLOAD KEYGEN.exe

It would take you forever, really. lol. But i swear. IT WORTH THE WAIT
So, after the long wait download, extract all files.

1. To install Adobe Photoshop CS2 you have to open the Folder “Adobe Photoshop CS2” and then click on “Adobe setup”.

2. Select your language.

3. Hit INSTALL PHOTOSHOP CS2

4. Add your name or nick name to the field provided, then open the folder of your Adobe Photoshop key gen (“key gen.exe”), and add the serial number into the setup. You’ll then see the message: “Warning: don’t close your key gen program, you will need it later!”

5. This is your key generator to get the serial number! Don’t close it yet! Return to the setup field and click next. You may see another part of the installation appear that says “Activate Adobe Photoshop”…

6. Visit the activation options and click on “by telephone via the automated software activation system”, then press “Activate” button.

7. Now you have to return to your “key gen” and add in the activation number of your product to generate your Authorization code!
Put your activation number in the activation number field and then click . Your Authorization code will now appear! Now you add your Authorization code and finish the installation of your product.

8. Input the Authorization code and then click “Activate”. Now your Adobe Photoshop is installed, activated and ready to be used! Have fun!

If you’re having trouble understanding this scribble, please do watch THIS..