If i buy a new digital SLR camera, can i use my old Canon EOS lenses with it, or do i need 'digital' lenses?

I'd probably be looking at a Canon EOS digital, so the make would be the same, but I'm not sure if I need a whole new set up, or if I can use my current lenses.

All of your EOS lenses made by Canon will work just fine. Some made by other manufacturers (like Sigma or Tamron) will probably work, but may not (those guys reverse-engineer Canon's mount electronics, so when Canon changes things sometimes they're not compatible). The good news is that the lens maker will probably update the lens (they put a new chip and/or rear mount on it) for free. :)

Keep in mind the "crop factor" -- the apparent focal length of your lenses will be different on the DSLR (unless you get the full-frame Canon 5D), because the imaging chip is smaller than 35mm film size. There's a 1.6X factor, so a 100mm lens on your film DSLR will have the same field of view as a 160mm lens on your film EOS camera...
Good luck.

I have a digital Canon and have used my old lenses. They work fine. If you are spending money on a new camera, why not also treat yourself to new lenses? Ritz Camera, for example, can have decent priced packages.

If you buy a Canon, yes. :)

if it says EOS (electo-optical-systems) it will work. although you will have a converson factor of 1.5+ because the digital image sensor (CMOS or CCD)is smaller than the area of a 35mm film plane, unless you pay the big bucks for the full size CMOS markII cameras. digital lenses use a smaller focal length to compensate for the conversion factor, but no biggie if you already invested in EOS lenses because they will work and work well.

Yes u can, lenses are similar and there is nothing called digital lense. The digital is the process inside the camera, lenses are just refractive devices