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<div>Thanks to everyone for the advice. My resolution went in a completely different direction though. Thanks to some advice from Adam M I learned that the MS VPN client is just a PPTP client and doesn't require ISA at all. So I ditched the ISA box (I'm sure there's some cheering out there somewhere) and just enabled PPTP passthrough on my router. My trusty 678 now sits in bridged mode and my router does the PPPoE (no worries about it starting back up after power failure and such as with ISA). With built in masquerading on the router and PPTP passthrough to a box behind it for VPN auth I'm set. Much simpler than ISA and does everything I wanted it to.</div>
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<div>Again, thanks to everyone that offered options.</div>
<div>Ben.</div></div>