Total Video2Dvd can help u burn avi to dvd, very easy to use.
http://www.effectmatrix.com/total_video_to_DVD_Author/index.htm
1. Support High-Definition video formats such as HD-DV, MKV, Blu-ray TS, TP, M2TS, AVCHD, WMV-HD etc to DVD.
2. Support most popular formats such as Youtube Flv, RM, RMVB, 3gp, h264, Xvid, MOV, VOB, Mpeg, Mpeg4, WMV, ASF, DV, Nsv, Ogm, AVI to DVD.
3. Convert video files into a compliant DVD and burns to DVD disc, also can create ISO image files.
4. Support lots of subtitle file formats, including .srt . sub .ssa .*** .smi .psb .tex .idx etc. Handles subtitles files (.srt) color and font. Supports tags.