CCD Camera Lenses that allow CCTV camera focus to be set from software?

[Jimmy FK]

If someone might be able to steer me in the right direction about "lenses" for my HTC-207 CCD Cameras, I would very much appreciate it. I do not want to waste more money on something that doesn't work by me guessing. The cameras accept C/CS lens mounts. Iris mode: AES/ Video Drive/ DC drive Selectable, as per what I found out. The present lenses on the cameras are: Auto Iris CCTV Lense 3.5-8mm F1.4.
What I need if there is such a thing for my cameras would me some way to set the focus other than manually twisting the lens rings on the cameras. In other words, is there lenses for these cameras that can be set from software? It is next to impossible to set them manually and get a good focus by guessing.
Presently, the AES setting has to be set on "DC" to have a picture. If set on Video Drive, there is no picture. Thank you in advance for any help. Jim