Driving directions - East Lansing to Troy, MI via 127, I-69, and I-75?

I'm going to visit a friend who lives in Troy, Michigan. I'm living on campus at MSU this summer, and I know the route I want to take is route 127 (northbound, which I think I can get onto on Trowbridge) to I-69 (which I think I can merge onto somewhere near Dewitt) to I-75 (which I think I can merge onto near Flint somewhere) to exit 74 (I know where I'm going from there). The thing is, I'm crap at directions and I've never driven this route before, and having mapquest or something like that spell out exactly what I'm going to do (i.e. keep left, what exit I need to take, that sort of thing) would really help. Unfortunantly, mapquest refuses to give me the route I want to take (I've been told that the 127, 69, 75 route is better than the mapquest route), and even trying to do it piece by piece doesn't work because it won't accept highways as addresses. If anyone can give me specific, mapquest-esque directions, I'd REALLY appreciate it.