What type of DVD-R should my system utilize?

[Chancesr]

I have a Dell
Dimension 9100
Processor Intel(R) Pentium(R) 4 CPU 3.00GHz
Processor Speed 2.92 GHz
Memory (RAM) 1024 MB
Operating System Microsoft Windows XP Home Edition
Operating System Version 5.1.2600

I want to purchase DVD-R's but they had a warning onthe label that you need
to know what type of DVD-R is compatabile with your "firmware". Can you
assist?

Thanks!


Chancesr