1. Install the IWebCF Snippets.vsi that can be downloaded here.
2. Double clicking the vsi file will bring up this dialog:

3. Click the Next button and be sure to select the appropriate folder for both snippets. If you have Visual Studio 2005 and 2008 installed you will need to select a folder for both editions as well as for both snippets.

4. Click Next and then click Finish to complete the install.