I once posted a quick guide on how to add VOB files in TMPGEnc DVD Author and make a menu. Here is a nice detailed guide that will hopefully help everyone.

Step 1: First things first you need to convert your .avi files to .vob using software such as Xilisoft Video Converter (my favorite) or VSO divx to dvd, etc. Once you get enough content to make a dvd open up TMPGEnc DVD Author and click
Create new project
Step 2: Click Add file and navigate to the folder your .vob files are in, make sure
All files(*.*) is selected for
Files of type:, select the first file you want to add and click
Open 
Step 3: Click
Chapter cut edit move the slider to the spot where you want to add the chapters and click
Add current frame to chapter click
OK when finished. Next click
Add new track… and repeat the steps again for each track.

Step 4: Click the
Create menu tab, I like to choose
Blue from the Menu Themes because it’s the most customizable and it has the chapters on separate pages which I like. If you have a picture you want to use for the background choose
Specify background image otherwise just use a default theme and change the text as needed.

Step 5: Once your background theme is added you can now play with the placement of the text, to move the text to the right put spaces before it, to move it to the left put spaces after it. I always delete the yellow
Title text but you can use it if you want. You can edit the chapter menu the same way, click
Next page to go to the chapters.

Step 6: Select an output folder and click
Begin output after the file is done outputting you will have the option to write to DVD, put in a blank disc and burn.