I am using Illustrator CS3 and trying to export my illustration. Problem is, I wanted to only export the illustration, no the background canvas area, how I can achieve that?
I have CS3. I created a new document, drew a filled circle on the artboard, and exported to png. It clipped automatically - no need to manually crop. Which format are you exporting to?
Unfortunately, I do not have access to CS3, I use CS5. However, I noticed that when you export, in the dialog box where you choose the file name, there's also this option:
Make sure it's unchecked as shown, this will export ONLY the content, not the artboard.
EDIT Alternatively you can fit your artboard to your illustration: