good discussion of this issue in part in the vpn/general section of this group dated june 9, 2003 about auto configuration after install-from my research thus far, it appears you will need to put the files on users machine as the installer will reboot and you would have no way to reconnect to finish the installation. i have similar problem in that i want to preserve the existing certificate and configuration and use those with the new install-no luck so far-see also fairly comprehensive document from cisco , ccmigration_09186a008015cfe3.pdf
Table of ContentsIntroductionVersion HistoryPossible Future
UpdatesDocuments PurposeNAT Operation in ASA 8.3+ SectionsRule Types
Network Object NATTwice NAT / Manual NATRule Types used per SectionNAT
Types used with Twice NAT / Manual NAT and Network Obje...
Table of Contents Introduction:This document describes details on how
NAT-T works. Background: ESP encrypts all critical information,
encapsulating the entire inner TCP/UDP datagram within an ESP header.
ESP is an IP protocol in the same sense that TCP an...