Glad you were able to do the import.
By the way, for any other folks who read this...
When looking at a pre-recorded DVD you will find .VOB files which as far as I know cannot be imported because it says "Unknown file type". Instead, copy them to your computer C: drive and rename them to be .MPG files
Then you can import them into PD.
Of course there are copyright issues here, but for example, scenes on DVD that you might not be able to do yourself, like planes landing, ships in harbors etc - the stuff that gets interspersed between action scenes with actors, can be co-opted into your own home movies of your mother-in-law arriving for a long stay etc.
If you can't solve the problem - Change the problem