cables in CFS2 are part of the CFG file. you would have to do what ever is required for FSX as they are not the same.
Depending on which ships you want to convert, you'll need perms before releasing.
For Collin's you'll want to ask Tom Sanford (Tango_Romeo). I have his email if you need it. Though some have already been done.
For Stuarts Ships, he includes the GMax source files. Stuart is currently the only active CFS2 ship builder that I know of. He is easily reached by PM.
Not sure how to reach Usio for his ships. Check his readme docs for contact info.
Mark Walsh has made some very nice modern ships. I have his email if you need it.
VN navy and ground crew's are lower quality compared to Collin's or Usio. They work great for CFS2 but you might not like them in FSX.
The biggest issue will be the textures and the lower detail of the models. All cfs2 textures are BMP not DDS. Most are 512x512.
If you want to make your own there are a few ways to do it. Use either 3Dmax or GMax. there is also a program called DelftShip. It will make highly detailed models that can be then imported into GMax or any other 3D modeler software. You can get that here...
http://www.delftship.net/DELFTship/index.php
If you want to learn more about 3D modelling contact Milton Shupe or Hairyspin.
Thats about all I've got.