I need the software...

With all digital cameras the maker delivers a CD (DVD) with software to install on your computer. This makes it possible to put the pictures from the camera on any computer. On the disk(s) are drivers for all operating systems that need them. (Windows 7 and up do have all drivers for hardware that is certified by Microsoft) And there are programs to download the pictures from the camera to the PC. Sometimes the manufactures also delivers software to organise the pictures in folders and software to view or even enhance the pictures you shot.
When you lost the disk, most of the time you can get the software on the website for your brand. Sometimes you even get newer, updated software and new drivers if needed.
If you can't get software form your brand, you always can install other generic software like Ulead, Pixir, BeFunkey, Gimp, Photoshop express. Or if that is not possible you could install an external memory card reader and download the pictures via de memory card reader.

Most brands of cameras deliver a CD with the camera, containing software, needed to backup, transfer and work with the pictures shot, on a computer.Most of the time there is software is for both, Windows and MAC.
Before you connect the camera with any computer, you should install the software. The disk also has the drivers for the old operating systems.
If you lost the CD, or just don't know where it is right now, you can go to the site of your camera brand and try to download the software you need. For that look under support.
If your camera is old, and the brand does not exist anymore, try a freeware picture transfer / editing software pack. Like Gimp or Adobe Photoshop elements.

The best way to download pictures from your camera to your computer involves removing the memory card from the camera and plugging it into a card reader (either built-in to the computer or connected via USB or FireWire). This is likely to be faster than connecting the camera to the computer, and won't run down your camera's batteries.

Once the card is plugged in, it will appear to your computer as a removable drive. You can use the operating system's drag&drop facility to copy pictures from the card to the computer's hard drive, the same way you copy any other files. Or you can use any photo cataloging program, such as Picasa ( http://picasa.google.com ).

download the orginal drivers from the panasonic website

www.driverguide.com

Try downloading 'Nikon Transfer' from the Nikon website.

or

If you're connecting camera via usb to a Mac (OS X) the camera memory and any cards mount as a volume you can drag files from.

Visualiser les images de la camera Sony DCR-TRV285E Digital-8 sur mon ordinateur portable HP avec Windows VISTA

Here is a link to the Aiptek download page, you should be able to download all the software you need here.
http://www.aiptek.com/drivers.htm

I lost the CD to my camera. I need to download the software.

Download the needed software directly from Canon:

http://www.usa.canon.com/consumer/controller?act=ModelInfoAct&tabact=SupportDetailTabAct&fcategoryid=223&modelid=7507#DownloadDetailAct