You can download the VPN Client from the below URL. Look for the section, "Cisco VPN Software Clients". My understanding is the software is free if you have a Smartnet Contract with Cisco and are authorized to download the VPN Client software. Most likely you will not be able to download the software, if your name is not associated with that contract. So, I would ask the company to send it to you through some means other than e mail.
http://www.cisco.com/kobayashi/sw-center/sw-vpn.shtml
Regards,
Arul