Yes! You should installed ISA 2006 SP1 on your IAG 2007 SSL VPN gateways.
Check out this post by Dan Watson from Microsoft for the details.
HTH,
Tom
Thomas W Shinder, M.D., MCSE
Sr. Consultant / Technical Writer
Prowess Consulting www.prowessconsulting.com
PROWESS CONSULTING documentation | integration | virtualization
Email: [email protected]
MVP — Forefront Edge Security (ISA/TMG/IAG)