VPN group command is supported till pix 6.x versions and no more supported in 7.x for PIX/ASA. The equivalent command for vpn group command is the tunnel group command. you can see the sample configuration in the below url:
as mentioned, the vpngroup no longer exists in version 7.x, however, if you can list your old configuration, maybe I can help you what shod the new configuration be :) and you can compare that to your new configs.
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...