I have the support department at payready committed to helping us add OScommerce to their suggested shopping carts.
I have used them for several years and they are inexpensive and reliable.
The support guy has worked on the integration but admits to lacking the required knowledge to integarte them.
I have the files he has worked on thus far and we are willing to pay someone to integrate the two.
If this is the wrong place to ask please forgive me but I have been looking to solve this since march.