If your Grundig has a place to plug in head phones, you can get a male to male cable that plugs into the headphone jack on your radio, and into the mic or line in port on your computer. Since you are a college student, talk to some of the computer geeks on campus and see if they have this cable.  If not you should be able to find one at Radio Shack for pretty cheap!! I do this and it works great!!!  I use mmsstv to do sstv.  It works great and nothing to configure.