How to open a Toshiba A30-514 laptop without braking it

Can you please help me? I have bought a new hard disc for my laptop, but I am afraid I am going to brake it. I have removed all the screws but it doesn't seem to open using reasonable force. I am afraid to force it any more. Are there any screws hidden under the rubber legs or something? Or should I force it harder? The down/left corner opened easily, but everything else doesn't seem to open. Anyone knows? Should I take it to some shop to do this?(and probably pay as much as I paid for the drive to have it replaced).

Even the man who have opened it can hardly explain this in words. Without breaking? It is hardly possible for beginners to do so without any damage, because the sort of laptop is not made particularly for taking into pieces again from the start. As to, for instance, Vaio, it is said that if you just change memory, you'll lose its warranty.

In any ways, you should have experience first. Buy any junk laptop first, broken one, very good, it would teach you many things in stead of 5$ or so. Sometimes you'll find there contained HDD(340Mb-1Gb? lucky?), little memory, FDD and so on.

Otherwise, consult friends of such a dexterity, the guy but one who can do this for fun hardly accomplish it.