3D image maker?

For awhile I have been a fan of games that have show up on this site, including Vilage of Nightmare and Harem Collecter (and I'm pretty sure that a few others in my selection are from here but meh) and I've decided it's time I finally make something of a similar caliber... one minor road bump though. All of these employ 3D-ish images with the actual sex scenes and I was wondering if anyone knows what program(s) are used or capable of doing it to this quality. I mean there's stuff like source film maker, sure, but I'm not sure any files from that would be usable by RPG maker VX.
Any help is thanked greatly!
Anubkin32
Any help is thanked greatly!
Anubkin32