If you have a few extra dollars you can buy a sensor loupe, which is basically a magnifying glass with leds that fits over the lens opening so you can look at the sensor and forego the shooting up at the sky to see if you've gotten all the dust particles. Google Delkin or Visible Dust and you'll see what they look like.

If you don't want to spend quite that much, for about half the price you can get a lighted head band magnifier. (Tom probably knows what I'm talking about) I find this a more versatile tool and went this route. (see picture at top)

And you can also get kits with the cleaning solution and a paddle made to the size of your sensor if you don't want to mess with the alcohol and tissues. The kit is a little on the expensive side as compared to the DIY option but again it's easier. Google Photographic Solutions, Inc Professional Digital Survival Kit, they come in version I, II or III. The website will tell you which version fits your camera.

Hope that sheds a little more light on the subject   : )

They say a picture is worth a thousand words...

So where do they go when a photograph leaves you speechless?