I have again found out the answer to my question myself.
Yes, in America your computer DVD players are set to play DVDs for Region 1 (American system i.e., NTSC format) only, but you can change it for a total of 5 times ONLY. Here is how:
I am quoting the answer below from Microsoft's Knowledge Center located at:http://www.microsoft.com/windows/windowsme...e/0072.mspx#ESEHow do I change my DVD region?
DVD movies are encoded for different world regions, and your DVD-ROM drive must be configured for the appropriate region in order to play the DVD.
If you have DVD-decoder software installed on your computer, you can usually change the DVD region setting in the DVD decoder program. Follow the instructions in the program's Help file for changing the DVD region setting.
If you have a software or a hardware DVD decoder installed on your computer, you can use Device Manager to change the DVD region setting in your DVD-ROM configuration:
1. Click Start
, right-click My Computer, and then click Properties
2. On the Hardware
tab, click Device Manager
3. In the list of devices, double-click DVD/CD-ROM
drives, right-click the DVD drive for which you want to change region settings, and then click Properties
4. On the DVD Region
tab, make the desired changes.
You must be logged on as an administrator or be a member of the Administrators group in order to change the DVD region.
Note that the DVD region for most DVD-ROMs can only be changed up to five times, and the number of changes still available is located on the DVD Region
tab. If the tab shows that you can only change the setting one more time (Changes remaining = 1), you won't be able to play DVDs that use a DVD region that is different from your last selection. If you run out of opportunities to change the setting (Changes remaining = 0), contact your DVD-ROM's manufacturer to reset this value.
I tried it, and I was successful. Somebody please thank me for doing the research and getting the answer from the horse's mouth i.e., Microsoft!!!