As much as wel like to help people getting their games to work, there are a couple of problems that I would like to explain before you expect an answer from us:
1. Chankast is an early stage emulator
Chankast is still far from perfect, certain games might possibly not run or will have severe glitches. Not every game is supported for 100%, your game might be one of them.
2. Crap images floating on the net
While personally I can understand one downloads an image to try when he has purchased the game as well, please keep in mind that there are a lot of crap images in circulation. Such as Dead or Alive 2 (limited edition) and Skies of Arcadia and any other Echelon rip released. These contain pre-game trainers that give problems when trying to run the image on Chankast.
3. We do not know everything
At the time of writing this forum still doesn't have that much members. Please keep in mind that we do not know everything about this emulator. Chankast isn't as popular and widely used as ePSXe. Some questions can not be answered with our limited knowledge. So you might have to pay a visit to other forums or ask google.
4. Don't cry if we can't help your cheap ass
One final point for all those n00bs who think this is a fine way to play quality games for free:
If for whatever reason your game doesn't work or we can't help you out, go play it on the real thing, period. If you don't have one, go buy one, they're dirt cheap and games can be had for 10 bucks or less, they are worth it. Be a man and don't complain about something you took for free.
That concludes my little rant 
I hope you will respect the points made.
Sidenote: I do not know how far the administrators will take the 'no warez' rule. If they will take a zero tolerance attitude later on this emulator might very well be scrapped from the support forums, as the few that still play their DC games because they own the games and like the system, play it on a real DC.