Help!

I've been upgrading some of my dvd's and have hit a snag. I currently have the original WB release of "Strangers on a Train" that has the original Hollywood version on side A and a British version on side B. Now I see the Warner SE of this movie had 2 versions as well...but they are listed as "Final Release version" and "Preview" version.

Are they the same movies, or are we talking about 3 or more different cuts. I need to know before double dipping. I went to dvdcompare.com, but there isn't a definitive answer.

Thanks!

Is this the one that you have?
http://www.amazon.com/exec/obidos/tg...v=glance&s=dvd

If yes, then it's the same movie but different DVD edition. The two disc edition also have the American & UK cut.

That's it. I guess I was thrown by the descriptions on the boxes. thanks!