challenge mode help

Ok, first off i'd like to thank you guys for the great job keeping this alive.
Now, i have downloaded this from demonoid and installed it and the updated art.
all works fine.
even got my bud to download it so we could duel each other over tcp/ip.
still, no problems..
i saw that you have a challenge mode on here now, so i went to try to turn it on so i could mess with that, and i don't have the config.txt file anywhere in my install.
did i miss something or what? i need another version?
i haven't even thought about adding new cards to this yet. i read through the tutorial and it just seem like a big headache to me right now.. lol
anyways.. thanks a lot, and any info would be great.

Now, i have downloaded this from demonoid and installed it and the updated art.
all works fine.
even got my bud to download it so we could duel each other over tcp/ip.
still, no problems..
i saw that you have a challenge mode on here now, so i went to try to turn it on so i could mess with that, and i don't have the config.txt file anywhere in my install.
did i miss something or what? i need another version?
i haven't even thought about adding new cards to this yet. i read through the tutorial and it just seem like a big headache to me right now.. lol
anyways.. thanks a lot, and any info would be great.