Back up problems with PX 716UA

Plextor Forum folks this is what I sent to Newbie forum earlier this week. I am new to DVD burning with lots of prior success in CD burining.
I have a new PX 716UF dual format dvd burner, Dell 4600C w/ 512 MB RAM and 40GB hard drive + a Western Digital 160 GB USB External Hard Drive (I’m using all it’s space for ripped dvd’s and DVD burning software) I have a DVD player in the Dell that I copy from. I want to play my copied DVD’S on a stand alone Panasonic PV9451 (it supports MPEG2 DVD’s) and is only 2 years old
I am trying to back up my DVD movies, I have so much trouble with that, that I haven’t yet had the chance to try much else. first thank all of you for your suggestions.
Now some more specifics: I am doing ok with decrypting and ripping to my HD. I am using the Freewar Decrypter 3.2 for this. After ripping with decrypter, I can open these; all the titles or chapters (whichever) are labeled Nero Showtime File–they are opened by and play on Nero showtime (it doesn’t look like Windows Media Player will open them)–does that tell us anything about this problem? I think this is the way they wound up as a result of the decprytion process in Decryptor 3.2.
The problem is in getting the DVD from the HD burned to disc. Could it be: 1. the Plextor 716Uh–is there some obscure setting or driver problem? I’ve looked at bitrate and I think I have that right. 2. Could it be to do with Nero Recode 2 or am I using the wrong Nero program (I have 6 ultra with the upgrade to 6.3). I believe that Decryptor defaults to use Nero Recode 2. I also have the Roxio software that came with the Plextor, but the opnions on these boards all seem to favor Nero–so I haven’t loaded Roxio’s DVD writing software except for the Plex Tools Pro (also upgraded week before last). There is also the Windows stuff that is part to the new Widows Media Player 9 upgrade. Could it be the meda Fujifilm DVD-R? I have lost of software and just too many variables here for sure. I need help. I’ve been at this for over a week BB and Plextor aren’t going to be of any help. Out of deperation I found a good on 1 click DVD Copy on E-bay las night and it is on the way. can anyone offer any help on this cold Montana night?

You forgot that you already ask the same question here, post #3.