I managed to combine the pictures of every time card, except for the Superball-timecard. It's saved at a lower resolution than the other pictures, and it looks really weird when I try to combine that picture with the rest. If VGHunter finds the time to save his pic at a higher resolution (just as it appears when you unlock it on the site), that would be great (or someone else with the Superball-card). I haven't tried the secret code yet, as I have been busy with university-stuff (and will be for the next couple of days), dg10050 is going to upload the music-files soon. I'll promise to try and complete the wallpaper later this week, if someone else hasn't done it by then.
And I agree, a blog post would seem quite appropiate here, I think a lot of people who bought the case file don't even know they can do all this stuff with their card.
Thanks to all of you who helped out! I certainly like these kind of small, online puzzels. I like Strong Bad, and I'm looking forward to Wallace & Gromit, but Sam & Max is the real reason I'm here. I hope we are going to get more stuff like this in the future.