I don't think that actually exists as a single logo.
It's basically three separate record company logos.
The "I" for Interscope, and the "S" for Shady can be found on www.brandsoftheworld.com (looks like the "S" has been laterally stretched to match the other two (IMG:http://www.hirescovers.net/forum/style_emoticons/default/unsure1.gif
There is a jpeg of the "A" for Aftermath on the Wikepedia site
The text underneath the logos should be pretty straighforward.
Hope that helps. (IMG:http://www.hirescovers.net/forum/style_emoticons/default/8824.gif