That is where you should start. Good choice.
The adapters are made by Stephen Mogg and are available here.
When you get there, click Webcam on the left panel, under Shopping. Then scroll down the illustrated listing to W-900NC-F. It is $24.
You remove the lens from the webcam and thread this adapter into its place. You insert the adapter into your telescope's focuser, thus turning the telescope into a giant camera lens. Focus as you normally would, using your computer screen to display the image.
The VRecord software that comes with the camera is fine for capturing the images. You'll store short AVI files on hard disk and process them later using a freeware program called Registax, which is available here.
Registax converts the AVI video stream file into separate frames, analyzes them for quality, and shows you the results. It has a simple process that allows you to keep only the best frames (you decide what best means by applying options), which Registax then combines into a single image frame. Registax then has post-processing routines that sharpen, color-balance, and otherwise improve the image before you save it as a single post-processed frame. You can then load this bitmapped image into another graphics program (like Photoshop) or use as-is.