I want ot down load the photos from my Kodak easyshare M873 digital camera to my PC.How do i do it

If you have the USB data cable that came with the camera hook it up and plug it in and it should show up as a Removable Drive when you click My Computer; you could also use the SD card if you have one put that into your computer if you have an SD card slot or an external SD card reader.

If you don't have a manual it is available online here:

http://www.kodak.com/global/plugins/acrobat/en/service/manuals/urg00754/M873_UG_GLB_en.pdf

Good luck!

Plug in the cable. Click the kodak icon to open the software. Close the program but the little icon stays in the lower right. Turn on the camera. Right click the icon, pick 'transfer now'.
That's how I do it. But uncheck the 'remove images from camera' because if something goes wrong, they're gone.