Since there are many different variables to consider, please use the following template to post your experiences.
CPU: 1.53 GHZ AMD Athlon 1800+
Memory: 768MB PC 2700
Source file size: 4.37GB
Resulting ratDVD file size: 1.13GB
Total conversion time: ~ 3.5 hours
Notes: Default ratDVD settings used. Source files contain video & audio movie only and no menus, no special features etc.