Check this guide, adjust where neccessary e.g. If you don't need subtitles then skip that step. http://www.afterdawn.com/guides/archive/divx_with_subtitles_to_vcd.cfm
Ok hee's a quick guide from me. Open up nerovision Drag and drop your avi file/s remove/ edit chapters and menu however you want. Start process and burn to cd-r. But I strongly recommend burning onto DVD instead as it can hold longer movies and better quality of video.