>If I use a product like http://www.hide-my-ip.com would
>there still be a need to also use a product like CGI Proxy?

Jody,

As John said, and I pointed out above, HideMYIp will give you a different IP each time. You will also share these IPs with others.

CGI Proxy will give you the same IP each time (per installation) and you will be the only one that uses it.