7 Bleeps at start up

Ok so we had a 5 bleep so we bought a new battery and fitted it in. Fits great no problem.

Turns on.

No screen activity. 7 bleeps. I look on this website and it suggests the PSA test (holding down FN)

I did this, 7 longer bleeps.

So, processor problem.

How do i fix this and where are the 6 screws to open the motherboard - because it says 6 but their are about 14 (i may have counted wrong) - it says to open this and reattach the other battery or something.

I tried Yahoo, not getting very good answers - i don't think "turning it off and on again" is going to help me in this situation :D

Quickly please i need this up and running soon :)

thanks