Is the table for the maximum amount of memory count two of the modules or only one?

You can upgrade to 2 GBs using two 1 GB modules unless you have a Core 2 Duo model in which case you can install two 2 GB modules. Depending upon which MacBook model you have you may only be able to use 3 GBs of the 4 GBs installed.

The maximum memory specifications from Apple state the total amount of memory that the hardware can take and make available to the operating system and applications, as tested and certified by the designers with available parts at the moment of its design. However, as Kappy points out, many times we have been happily surprised to find that newer DIMM modules are recognized and usable by the older Macs, allowing more RAM than what Apple told us.

For instance, the 2011 MBPs were said to have a max. RAM capacity of 8GB. However, the 8GB SODIMM modules have become more affordable and it turns out that those Macs can be pushed up to 16GB.

Then you can install a maximum of 2 GBs of RAM. The MacBook 1,1 is a Core Duo model, not Core 2 Duo.

That also means that the Mac will only be able to be upgraded to Snow Leopard, not Lion. This may even be deemed a Good Thing by many of the locals that are less than enchanted with that latest cat.