Hi RDINIS,
Thanks for your response, I have tried to rename files without success, as you mentioned the same thing as I have heard before I googled and receive this information if any one else is interested, who is having the same problems

Rename VOB to MPEG or MPG
it did allow me to change the file but I still was unable to but with Intertech DVD Converter Pro and YASA DVD Ripper Platinum I am getting 'unsupported audio format' and with AVS Video converter I get 'unsupported video format or damaged file' if I set AVS to the uncompressed it works but 3 hours using 80 Gb that seems alot. Is there any converter you can recommend ? With only 5 days left on the trial I am getting frustrusted - I have searched the adobe site and so far no luck with a solution - please help.