Medic85,
Here is my suggestion:
Try putting the camera on its "M" setting to truly get used to your cameras settings (using the 10D partial metering setting is recommended for metering). By doing this you will make yourself familar with your cameras settings, much better then film because you see results immediately. Once you learn your camera and its settings its very possible you will make better adjustments ex. f/stop, shutter, iso, white balance and other settings then the camera computer chip can. Of course until you become familar with this, just switch back to Auto mode when you want to get the shot. You might want to take a trip to your local library and pickup a photography book (ex. Kodaks Guide to 35mm Photography, this helps describe the different settings for 35mm film but the same general process still exists), or any other book on SLR or DSLR photography.
However only you can truly make the choice of what works best for you 