Sony VAIO Overheating - how do you remove bottom panel?

I have a Sony VAIO Model PCG-3A1L and have removed all the screws from the bottom panel (removed battery), removed the hard drive, DVD drive and cover over memory. I can not get the back section separated around the two hinges.

I can see the fan in the back, and it's filthy and there is quite a bit of dust around the air intact.

Anyone know what I'm missing that would allow me to totally separate the bottom panel? I really want to get in there and do a thorough clean-up. I have found some sites on line that show other models of the VAIO and they have you separate the keyboard and get to the top - but this one has screw you can see from underneath that you can see go up in to the area around the keyboard. It's obvious that these screws can only be removed if you get the bottom panel off.

Thanks in advance

 

Here are some of the VAIO series and you can possibly use the guides "generically" (that is find one that is "very similar to your model and use it as a reference):

http://repair4laptop.org/notebook_hard_drive.html

http://www.notebookforums.com/forumdisplay.php?f=100&order=desc&page=6

Naturally you do this at your own risk.

 

One of the links had it. Got it apart and man was it filthy. Still having some issues, but I can no longer fry an egg on the back panel near the cooling fins. They were plugged solid.

 

Awesome, good to hear I hope you have a decent grease to apply to the CPU that can also make a nice difference.

 

Yeah I have a Sony Vaio laptop, you seriously gotta keep those things clean or they'll get pretty hott.