Viper_Viper,
I'm afraid it's already too late to tell me that, cos I've pretty much got every game boxart for nds, most of which are at the
very least 200+ pixels (but a good number of them are higher than
400 pixels). Some games are very hard to find good covers for them, but I've managed to get most of them. Just think of it like I'm a boxart collector, (and I very much enjoy doing it). for example, I did the same thing for N64 several years ago, though this was merely for USA games.
At the moment I have about 25 MB of source images I got off the net (hint, try Amazon.co.uk, Amazon.com & Amazon.co.jp) And I also found it far more easier to get the jap games if I searched using their jap names (in proper symbolic lettering).
Another thing is I'm very picky with my images and I will spend as much time as need to carefully fix and adjust them to the clearest and bestest quality I can do them.
And with the loading of images (through the Flash thingo) each image would be loaded only when needed (at the moment each one is between 20-50 kb in a png file for quality). And most people would only look at games they were interested in...
Anyway, the only big job is getting the first-run things in order (which I have pretty much done), after that I would only need to add to it when new games come out, and not doing the boxarts as I have done would be like taking the candy out of my hand and replacing it with something smelly and horrible...
Also, another brief update on my status...
I've got the region thingo working now so you can quickly jump between different versions of the games (ie us to jap) and most of the information textboxes are properly showing all their info as well.
Next I'm going to look towards adding and perfecting the search functions (which need to be reworked due to my new layout of things). I'm actually using two XML files at the same time to gather information for games. This is to simplify the compat list xml as much as possible so it can be edited by others with little effort.
Though tomorrow marks the last of my holidays, so from after that, I may have less time to work on it, especially as homework begins to roll in. But keep up the good work, and I'll be awaiting to hear when someone beats Rockmangames in updating the compat list thread...

I'll post some more screenshots when I can show some decent improvement to the last.