This solution is specifically for the Money in the Bank trophy. I highly recommend the other solutions for this achievement, as I found both helpful:Solution for Championship Gold! in WWE SmackDown vs. RAW 2007Solution for Championship Gold! in WWE SmackDown vs. RAW 2007
I found this match to be a real pain in the ass, since the AI characters always seem to get up when you grab the ladder, no matter how injured they are. After endlessly scouring the internet, I finally found a method that works.
Use Khali against 5 minimum stat, short/lightweight CAWs (must be male, by the way). When the match starts, jump out of the ring and grab a ladder, take it all the way up the ramp and set it up. Then go back and grab the other ladder and do the same.
Now, lure the CAWs up the ramp and beat the ever-loving piss out of them. Ideally, KO them (the red flash; it won't eliminate them, but they will stagger around a lot - you need this). Once all 5 are all/mostly red and on the ground, run and grab a ladder and take it to the ring, set it up, and get the case. You *should* have plenty of time to take the entire case down, as the CAWs will be slow/staggering. If not, rinse/repeat as necessary.