The camera body itself has no zoom capability...it is the lens added to the body that does the zoom. For a SLR Lens to be a "ZOOM" lens it must be variable ..like ...70-200mm. Lenses with only one set of numbers are prime lenses and are of just one magnification.
These lenses can be as small as 10mm to as high as 1500mm and more, some variable.
The lens that most commonly ships with the Canon XSi is a EF-S 18-55mm f/3.5-5.6 IS Lens.

The CCD-TR86 uses a RCA male to RCA male cord.
Your local BestBuy should have the cord at the store. This is a Mono camera therefor it only has one audio out and one video out (black,yellow).
You can still use a stereo A/V cord (red,white,yellow), just use the yellow for the video...and either the red or white end for the audio...just one...if you use the red on the camera make sure to use the red on the other end to connect to the TV.

There is not a VCR (Video TAPE Recorder) that will play Divx.
There is a Phillips DvD Player that will play Divx burned from a computer.

Blu-Ray is a high capacity disk that stores 50GB and higher of data. Due to this High capacity a HD movie can be stored in full 1080p resolution uncompressed.
The term Blu-Ray refers to the color of the laser..to quote the Sony site:
"It is called Blu-ray because the laser that is used to write and read data is blue instead of red or infrared which is used for CD and DVD. It is spelt Blu instead of Blue because by law daily-used name cannot be registered as a trademark. "