If you have the Apple care for your powerbook you have a better chance to get a new keyboard from Apple. Call Apple care and explain that the broken keys were not your fault(I hope). Be sure to be honest to Apple. Good luck.
If the powerbook is less than 90 days warranty there is a chance that you get a new keyboard. Call Apple right now. If apple does not agree to replace the broken keyboard you can go to online store for the broken key caps.
http://www.pbparts.com
The manufacturer is Panasonic.
tray-loading "UJ-810" and the slot-loading "UJ-815".
The write speeds of both are the same.
Write speeds:
DVD-R 2X
DVD-RW 1X
DVD-RAM 2X
CD-R 16X
CD-RW 4X
Read speeds:
DVD 8X
Since the price of TFT LCD dropped drastically for the last couple of months Apple can afford to drop the iMac price. The price of PC133 memory help Apple drops the price further. See that the powerbook price plummets this month as well.
It seems like that you have a bad memory module. What you have to do is to get a refund of it. I have a 512 MB memory module to sell. It worked flawlessly with my previous ibook. Now it is working in my new powerbook. As far as I know PC133 sodimm memory works in ibook, powerbook and new iMac...