Note: The file you are trying to reach is contained in the 4/2006 version of the PHS 398. 
As of January 4, 2008, a new PHS 398 version dated 11/2007 is available on the NIH Forms and Applications web page:

http://grants.nih.gov/grants/forms.htm

The new forms may be used immediately.  More information about the new forms and use of the old forms is available in the 1/4/2008 NIH Guide Notice:

http://grants.nih.gov/grants/guide/notice-files/NOT-OD-08-028.html

The 4/2006 forms may be used for submission/receipt dates prior to May 25, 2008 and are available at URL:

http://grants.nih.gov/grants/funding/phs398_ver0406/phs398.html

The new direct link to the 4/2006 file you requested is:

http://grants.nih.gov/grants/funding/phs398_ver0406/instructions2/phs398instructions.htm

Inquiries on any changes to the forms and instructions may be directed to:

Grants Info
Office of Extramural Research
National Institutes of Health
Telephone: 301-945-7573
TTY: 301-435-0088
Email: [email protected]