Ya its easy you take 6 screws out. Just be cafeful when you go to pull the top off. There is that little metallic looking strip that you don\'t want to break. It runs from the eject and power buttons to the underside of the PS2.
You \'ll have to pull the top towards the front a little to slide it over the controller ports & disc tray and you can see that metallic strip I was talking about. Just lay the top over to your right if the front of the PS2 is facing you and you won\'t have any problems.
Once you have the top off you need a small screwdriver to remove the 4 screws that hold the cd lens cover on. It has a sticker on it that says *Danger of lens radiation when on*. Remove that and you\'ll see the lens.
Then just take a Q-tip swabed with alcohol and gently clean the lens eye. Use very small circular motions. And don\'t apply a lot of pressure. Give it a minute or so to let the alcohol evapporate then put it all back together.
If all this sounds too complicated then I suggest taking it to someone, but it\'s really not that difficult. Again just be sure not to lift the PS2 top straight up and break that Eject Power metallic wire. You have plenty of play so you shouldn\'t have much to worry about.
Good Luck