WiFi is a way of connecting or interfacing computer devices together without a direct hard connection (cable). Some camcorders have experimented with WiFi but have not caught on in popularity. Sony had a model that was sold in the UK. Samsung had a model that used two separate lenses to send video to one camcorder. WiFI is being used on some SD cards to send photos directly to computers to expand storage from the camera.

Well there are two media options I would suggest for you:
MiniDV or Flash Memory based camcorders.
There are several MiniDV Models under $300 and many under $400 in the Flash media. The benefits of the MiniDV is that if you want to edit the footage it is an easer format to edit from and the record lengths are long (up to 90mins in LP mode). The flash media is smaller and takes up less storage space. The record lengths depend on the size of the Flash Memory. Also the Flash Memory can be recorded on and re-formated for reuse many times. The MiniDV can be erased several times but will wear out after repeated use. Both formats can be connected directly to a stand alone DvD burner by the A/V (Audio Video) cables. This would be the fastest and easiest way to transfer to DvD.

There are many different ways to do this. A stand alone DvD Recorder is one option. Capturing the footage on a computer and burning a DvD is another. Footage can either be transferred by Firewire (IEEE 1394 cable) or by USB. It can also be captured by a Video Bridge device such as the Dazzel from Pinnacle. Using a stand alone DvD burner is probably the easiest and fastest way to transfer to disk. There are many different options for stand alone burners. Stop by your nearest BestBuy and take a look.

ISO means International Organization for Standardization. It is a way of making sure that all exposure speeds of film, and digital sensitivity are the same. A low ISO number means more light is needed to expose the film (sensor) to get an image. The low number is also the sharper picture. More light can be
given by either slower shutter speed or larger aperture opening. The slower shutter can cause blur in the photo at low light.
A higher number is better for low light and sports shooting, however it does give more grain (noise) to the image. Most digital cameras can go as low as 100 and as high as 1600. Some advanced digital and D-SLR cameras can go to 3200. 1200 ISO is a fairly high speed and would work well in low light, such as evening outside shots.