Problem playing DVDs

I'm having a problem watching DVDs on my computer. I have Windows XP
service pack 2 installed. The former owner of the computer unfortunetely
wiped the hard drive clean and I had to start from scratch. I have only
a DVD Burner in my PC. It reads Audio CDs, VCDs, and the like, but I'm
having problems with it reading DVD's. I recently purchased WIN DVD
because I was told the PC did not have a DVD decoder (might have been from
wiping the hard drive clean). This did not, however, solve the problem.
I went online and downloaded a free trial version of Power DVD and some
of the DVD's play fine now. But there are some DVD's that when played,
get this error message:
" ERROR CODE F4D41436
The TV Out port of your display card is not working properly. This copy
protected disc can not be played when the TV Out function is enabled. "
I have no clue as to what this is referring to. Also, when I try to
open the DVD with Inter Actual Player, it tells me the file ITIIMG3.dll is
missing. What is this file and where can I get it?

Hi Amo, I am unsure as to the exact nature of your problem, but have quite a good educated guess.

The DVD is possible too highly protected. OK, you bought the DVD and should be able to watch it, so it might not hurt to download a trial copy of a program called "Any DVD". It will sit in your sys tray and when you insert a DVD it will allow you access to any dvd.

http://www.slysoft.com/en/anydvd.html

This program is not to be used for illegal purposes....etc
I "hope" that helps.

~Ana