I need to configure a VPN between Cisco PIX's at two locations. One site has a 506E version 6.2 with 3DES enabled. The other has a 515E version 6.1 w/o 3DES. I have acquired an updated activation key for the 515E which will enable 3DES. However, because of the IOS version, the installation instructions from Cisco tell me I need to download a new software image in order to update the activation key. I have not worked much with the 515 . . . where does this image file come from? Cisco only sent me an activation key -- not an image file. Where do I go from here? Thanks for your help