IMac G4 PPC, what kind of memory do I need?

Question

I've looked everywhere, but I haven't found anything that screams "This is clearly the exact thing you need, doofus".
I own an iMac G4 PPC.
Here are the specs:
  Machine Name:          iMac
  Machine Model:          PowerMac6,1
  CPU Type:          PowerPC G4  (3.3)
  Number Of CPUs:          1
  CPU Speed:          1 GHz
  L2 Cache (per CPU):          256 KB
  Memory:          256 MB
  Bus Speed:          133 MHz
  Boot ROM Version:          4.5.9f1
  Serial Number:          W8******NHX
And if this is important, here:
  System Version:          Mac OS X 10.4.11 (8S165)
  Kernel Version:          Darwin 8.11.0
And this: (Memory)
DIMM1/J20:
  Size:          256 MB
  Type:          DDR SDRAM
  Speed:          PC2100U-25330
  Status:          OK
(The only other slot is "DIMM0/J22", and all it says is "Empty".  I'm just assuming that's the one I'm trying to get memory for.)
For the past since forever, I've been trying to find some memory I can add to it, because it's showing its age.  I love this computer, and I want to get as much out of it as I can.
The thing is, I can't seem to find the specific type of memory for it anywhere.  And if I have, I sure don't know if it's the right kind.
I need the biggest possible memory I can put in the slot on the bottom, the one that apparently goes in the "DIMM0/J22" slot, which is the only one out of two that says "empty".
I've tried a few sites like Crucial, which have a system scanner to help pinpoint your compatibility, but my system doesn't support that application and refuses to run it.
What kind of memory goes into the user-accessible slot on my machine?
Can someone please help me out?  I'm sick and tired of that beach ball.
<Edited By Host>

Answer 1

Click here for some; you need a 200-pin SO-DIMM.
(75711)