Cards in my recent A4000

[da9000]

Agreed with vk3heg. Do as he says, and for the battery, do it soon. After that do some searching on the forums for how to deal with leaks. Basically there's the vinegar and rubbing alcohol method. Also washing it with plenty of water will help get rid of residue.

Let me see if I can find my previous posts on the subject...

EDIT:
Here you go:
http://www.amiga.org/forums/showthread.php?t=35621

I highly recommend you also read the sub-links that I provide in the thread above.

Also this will be eventually needed (cap replacement):
http://www.amiga.org/gallery/index.php?n=2354

[da9000]

You can use the keyboard arrows to move the mouse. You press one of the Amiga keys (I always forget, but if I'm infront of the keyboard I can remember it) and move the mouse. Then the other key or pressing both is like left and right mouse button. So try these keys and the arrows: shift, Amiga Left, Amiga Right, Ctrl, or search the forums or wait for someone to post the exact key combos!