Instinct HD and windows 7 sprint media manager?

Let me start by extending greetings. This is my first post. Here are my issues. 1. Sprint media mgr. won't activate HD. Appears to be a bad USB driver. and other is the ring tone issue that is trying to take a ring tone on my PC and get it on my phone. I have tried all the editing software on the forums, i tried the uploading with the websites like Rumkin, and i get the text message but not way to get it in the list of ringtones. No import util, not download option, it just takes me to a browser and there is the tone and it plays on the webpage but no way to get it to the phone ring tone list. Format is less than 30sec and is wav. So in summary: any one know of a USB fix for the media mgr. Sync, and anyone know a way of getting a ring tone to show up under ring tones. Thanks
FYI Win 7 OS, Instinct HD (850) Carrier Sprint. Phone's mem card does show up in my computer. not way to access folders on phone itself even using bitcom.

I cant see my Memory Card on my home pc either but im running XP, gives me some crap about the usb device is malfunctioning. It works on every other computer though so its something to do with the computer it seems.   I can PAM and use QPST so i know the computer is seeing my phone it just wont read the card for some reason.

Thanks, ill try that although it will have to wait until Monday as I left the cord at work.