Macbook RAM upgrade help

Hi,

I want to upgrade the RAM in my macbook but I dont think I'm completely understanding what I can upgrade to. Here's the specs:

Hardware Overview:

Model Name: MacBook
Model Identifier: MacBook4,1
Processor Name: Intel Core 2 Duo
Processor Speed: 2.4 GHz
Number Of Processors: 1
Total Number Of Cores: 2
L2 Cache: 3 MB
Memory: 4 GB
Bus Speed: 800 MHz

I read apple recommends that you install equal size ram into each slot but that the max for this model is 6gb. Would a 4gb and a 2gb not work well? Any suggestions would help greatly.

Thanks for you help

 

Thanks, 4gb is the max. Shame Ill have to upgrade now.