ordering this computer, dvd drive questions.

[barnacle]

is 560w necessarily better than 500w, or is it just to prepare for the future.
here is my soon to be system:
http://www.newegg.com/app/ViewProductDesc.asp?description=11-133-105&depa=1

http://www.newegg.com/app/ViewProductDesc.asp?description=19-103-463&depa=1

http://www.newegg.com/app/viewProductDesc.asp?description=14-102-363&depa=1

http://www.newegg.com/app/viewProductDesc.asp?description=13-131-510&depa=1

http://www.newegg.com/app/ViewProductDesc.asp?description=20-145-474&depa=1

http://www.newegg.com/app/ViewProductDesc.asp?description=22-144-160&depa=1
or
http://www.newegg.com/app/ViewProductDesc.asp?description=22-144-151&depa=1
which one you think is better.
please explain all the DVD-R and DVD+R
and DVD+RW and DVD-RW stuff
i will be using a 1997 or 98 gateway monitor
and some wireless mouse/keyboard combo
i want a dual fan power supply, 500w will be fine, right?

 

[barnacle]

or this badass case, i like it, but not as many fans as the other one above.is it as good?
http://www.newegg.com/app/ViewProductDesc.asp?description=11-148-001&depa=1
not sure which of the 2x512 packages i want to buy either.

 

[Illegal Amigo]

I have a dvd burner, and DVD-R is the standard that allows you to burn back-up copies of your movies, and be playable on standard dvd players.

 

[westie]

DVD +/- does everything Dvd's and Cd's just it comes with a nice price tag.