Your description of the problem isn't really specific enough for me to tell you what is going wrong. However....
If your software will allow you, try reversing the interpolation of the fields. If you're currently burning it upper-field first, change it to lower-field first and vice-versa.
Make sure the resolution of your final movie is 720x480 and not something smaller.
Are you burning an MPEG-1 video for DVD? MPEG-1 comes out looking like a crappy VHS dub. Make sure you're encoding your material for the DVD program as MPEG-2.
Can you describe the "fuzziness" more clearly? (No pun intended.)
hinking.gifHow was the original footage recorded? Digital? VHS? Hi-8? Are you working with footage straight from tape, or are you using MPEGs or video compressed for web viewing? Stuff to think about.