I all ! I have bought a macbook white to a friend, without the original CDs (the grey ones). Basically, does it matters ? Because I thaught it does, I have reached the apple online store by phone and ask them if they can provide them to me... and actually, I am a bit wondering by their answer. The man began to explain me that a upgrade on mac must be done step by step, and I can't switch from 10.4 directly to 10.7. Okay, but that wasn't my question. So, after I precise my thaught, he said me that actually CDs doesn't exist anymore for macs, and if I want, I can directly buy the retail version of an OS. So, do you think that without for example the grey cds, if I need to restore something, or check something, my retail version of 10.6 is sufficient ? If I need the grey CDs, I also have another question : the mac I bought doesn't come from the country I live in. So for example, if I can find the suitable CDs in my country, Germany, will it be suitable for a French or even US Macbook ? Thank you a lot for your help !