They sure will.
No, it only plays standard DVDs.
HD DVDS are DVDs that can be played on high definition TV players. The regular DVD can be played on any TV and is not in the same definition as the HD DVDs.
HD stands for high definition. SD or standard definition is 480 interlaced lines of resolution, which is the traditional CRT television image the majority of us has seen for years. HD DVDs pack more clarity so they appear clearer on an HDTV. Most HD DVDs are made to be produced at HD resolutions of 1080i or 1080p.
No and HD DVDs have been permanently discontinued
HD DVD players can only play HD DVDs whereas a PS3 can play standard and HD DVDs, as well as Blu-Ray discs. You would be better off with the PS3 as it can play games as well, if you ever want to play those, too.
No, due to technical differences, only a HD DVD drive can play HD DVDs.
Let me elaborate a little more than a simple "yes". HD DVDs will, as of November, 2007, only play on a device that has the "HD DVD" logo somewhere on the device. Currently, Toshiba is the biggest manufacturer of HD DVD players; also, the XBOX 360 has a separate, external HD DVD drive that can be purchased for around $180. PS3s will NOT play HD DVDs. The PS3 is made by Sony, which is devoted to the main competing high definition format to HD DVD, and that is BLU RAY. Unlike the XBOX, the PS3 comes with the Blu-Ray player already installed. Just as Blu-Ray players will not play HD DVDs, the same goes for HD DVD players; they won't play BLU-Ray disks. However, the comany LG has released a dual-format player on the market which will play both HD DVDs and Blu-Rays, and Samsung plans to release their new dual-format players by January of 2008. The LG and Samsung players will each cost around $1000. One more thing: Both Blu-Ray and HD DVD players WILL play standard DVDs and use an "upconvert" feature to polish the appearance of your standard definition movies so they look almost as good as High definition movies. Music CDs can also be played in MOST high definition players, at least the newer ones. Check with the retailer or manufacturer if CD playback is really important to you.
No and HD DVDs have been permanently discontinued
HD DVD is an obsolete format: Toshiba stopped supporting it in February 2008. You still see the players around in discount stores, but no-one is making the discs anymore. The remaining format for high definition DVD is blu ray. To play a HD DVD disc (assuming you have one) you need a HD DVD player (it will also play standard DVDs). For a blu ray disc you need a blu ray player (it will also play standard DVDs). A standard DVD player will not play either HD DVD or blu ray, and cannot be altered so that it will play either (a standard DVD player uses the wrong kind of scanning laser).
HD ready tv is High Definition - meaning more clear, concise and crisp picture as well as sound. There is special programming through your cable for this if you have a High Definition television.
Yes the PS3 will upgrade the DVDs to near HD quality.
Playstation 3 will play HD DVDs. You do not need an accessory to have the HD DVD work.