> I would never have got that , I am not a film buff
You will find imdb.com (Internet Movie Datebase) invaluable for questions like this.
For example, in this case you would search IMDB and find the page for Raquel Welch:
http://www.imdb.com/name/nm0000079/
Then you would scan down the list of films she was in, looking at the name of the characters she played, until you found:
Fathom
Fathom Harvill 1967