i'm a total noob at this myself. just did it over this weekend.
1) hooked minidv cam to computer via firewire
2) used Ulead Video Studio 7 to "Capture" video (it automatically plays the camera and stops it when it's over)
3) captured it directly as Mpeg2 dvd video
4) kept settings on very high (8000k bitrate)
5) once it was captured (you'll need some good HDD space... LOTS more if you go the AVI to mpeg2 route), i edited it as needed, added titles, transitions and such
6) since i made changes to it, i needed to output the video once again to the HDD (more space!) and again chose the bitrates and all. took a little time to render (about an hour or so)
7) took my final mpg2 file into TMPGENC DVD Author and set up chapters and menus.
8) Output the video to TS Video folders on the HDD.
9) pulled up nero6 and burned DVD video
all in all, it went pretty well. since i kept the bitrate and quality so high (archiving kids home movies), i only fit 1-2 hrs on the DVDs.
just make sure you're using DVD media that works well with your writer AND player. i'd burn at 4x or less, and do a simulation first just to make sure you don't waste $$ on coasters. might wanna invest in a DVD-RW (or +RW depending on your writer/player compatibility) to test the movies and make sure you like what you see. wish i had.