Yamaha DTXpress/DTXplorer/DTXtreme

finally about to upgrade my existing edrum setup, am considering 
using the dmpro as my main brain unit. only problem is i have many 
yamaha trigger pads from my dtxpress which i intend to 
use, and i dont know anybody who uses the dmpro with yamaha pads. 

firstly, is this possible? (i'm assuming it is) and secondly, for 
those of u who have tried/use this configuration, does it work well 
or have u encountered any problems? was there any need to buy 
additionals accessories (i.e. cables etc)?

any info would be much appreciated.
cheers pete