For anyone who knows about PS2's and memory cards!!

[ssd]

My son has a friend over who has brought his memory card for his PS2 and my son wants to load his friends memory card onto his memory card.

How does he do this?

Two of my minded children have done this (but aren't here for me to check). I'm not certain what they did but, for an individual game, I think they played and saved the game on one memory card. They then put the other memory card in, and were able to load the original saved game onto that. I guess that if that doesn't work, they were telling fibs. (The two boys were at daggers drawn recently for copying each others "levels" on a game). Have no real idea what I'm talking about, but there's nothing to stop your son trying it out!

Perhaps they should try just putting both memory cards in, and seeing any on-screen instructions?

That's how I did it, like ThePrisoner suggested. Just don't forget to save it, once you've loaded it on the 2nd card.