a method is as VILLA21 states for existing burnt (S)VCD'S, for future (S)VCD'S you can alter the bitrate seting in DVD2SVCD to use 1 disc for all times times then set the disk size to 2200 for all times , change the template in frame server to CVD and in the encoder advanced settings choose close all gops.dont downsample the audio
this will produce 1 mpg file 2.2gb ish. once you have two of these you can start a new project in movie factory add the two mpgs, create first menu and sub chapters and burn to dvd