I didn't realize there was an "entry level" on Linode? My "entry level" was a 1024, so I'm guessing you're referring to this?
Why spend money on cPanel when you're already paying for a VPS that doesn't come with it? That's extra money. If you really want a control panel, go for something free, like Webmin. I'd recommend doing everything through ssh, though. Much more secure, not that hard to learn, and more options available to you.
If you insist on cPanel, click the Search link up top (between FAQ and Memberlist), and type in cpanel as your search term. This topic has been posted several times in my short stay at the forum.