I am not able to extract ISO file on Windows Vista. I am having a DVD file. it has some software that was given by my company. There is a readme file in it, which says that it has a udf file system. So it is a kind of iso file support. I am using Winrar to open the file and extracting its content. But the same is not working. I need some help with that. The file size is around 4GB. Is there any better tool available for the same. Thanks.