Hi, I am trying to convert DVD to XviD using the guide "Copy your DVD to XviD with AC3 surround sound" .In one of the step i need to calculate the citrate..so i downloaded the XviD bitrate calculator ..but it gives me some error message .So i downloaded the "msstdfmt.dll" and copied it to windows\system directory and also installed "VBRun60sp5.exe".Then also i am getting the same error message "Class not registered.You need the following file to be installed on your machine."msstdfmt.dll" The movie length is(as seen in smart ripper): 1 hr 40 min 26 sec The size of the movie is:1024 MB The size of the AC3 file is 322 MB Please give me the video bitrate(calculate using XviD bitrate calculator) Is there any other bitrate calculator Thnx in advance