Well I just finished doing exactly what your asking about.....it was extremely easy. I have never done it before this time......the only thing I had an issue with was getting the headset to seat properly without the tool to do it....I just used a pvc pipe and a long bolt with washers as suggested on here, worked like a charm. A few tips, get the right tool for the bottom bracket and dont forget to grease everything (as recommended). I did it all in about three or four hours.