FRx 6.7 is up to service pack 5. You can get it here: http://mbs.microsoft.com/public/insights/ReadArticle.aspx?rcpt_id=10754643&ja_id=28437
FRx Service Pack 5 Now Available
Reporting & BIInstall, Upgrade & Admin
Archived post from 2005. Dynamics GP and the links it points to have changed since; check current documentation before relying on version-specific steps.