I found the memory I probably need - http://bit.ly/UPnbMf
Question: Those are "1066" only, not "800/1066" but I assume that's not a problem. Let me know if otherwise.
Last question. The service manual says:
"The recommended memory configurations are: Matched memory modules installed in DIMM connectors 2, 4, and 6 and another matched memory modules installed in DIMM connectors 1, 3, and 5."
If I get two sets of 2x4GB matched modules (total 16GB), it looks as if I'm supposed to put two matched 4GB modules in connectors 1 & 3, and the other two matched 4GB modules in connectors 2 & 4. Is that correct?
Thanks for your patience.