I need an R7 version of my company logo which was created as a .AI file on CS6
As Scott said, we realyl need to know what this "R7" is supposed to mean. If it's a specific format for some otehr software, chances are there is no way to convert it from Illustrator, but the software itself may be able to read e.g. AI 88 or EPS saved from AI...
Uggh. That won't work. I don't even know which version of AI last allowed saving so far back. CS6 only allows the AI 88 format and even that is probably merely a concession to the myriad of 3D, CAD, milling/ cutting and whatever programs that use it to import vector files on the smallest common denominator. You will definitely need anotehr version of AI inbetween or another program to save even further back...
To clarify tthe OP is referring to AI v7.0 the R7 reference is what the OP is calling it.
All files from 88 through CS 6 will open in AI v 7 you can save back to version 8 or v3 and open one of those in & and resave it.
If you ae sending the file to a third party then you might wish to send them a pdf.