What version number of Lightroom are you using?
What operating system?
Import does not allow "rename folders", it does allow you to choose a folder (including creating new folders) where the photos are to be imported into, is that what you mean?
it won't let me rename the folder it goes into
"It"? What part of Lightroom won't let you? Be specific. What happens when you try?
I have Lightroom 2015.1.1 and MacOS 10.10.5.
Right clicking on an existing folder gives me a Rename option, among other things.