How to guide

Hi, although I am pretty familiar with computers, I am a noob when it comes to cd/dvd drives. Recently I have purchased some 100 blank RiData 16x DVD+R’s, but they only read as 4x. I’ve seen people having similar problems with firmware. But I am having trouble finding a good how-to guide on how to upgrade firmware. So I was wondering if anybody knows a link to a good, easy, and thorogh guide online. Thanks.

AMD64 3200+ 2.0GHz
Soltek K8T800Pro
Aspire 500W PSU
1024 MB DDR400 RAM
ATi Radeon 9800 Pro 256MB
Hauppppauge WinTV-PVR 350
Kingwin Arctic Liquid Cooler
*NEC N3520A DVD+/-RW
*AOpen COM5232/AAH Pro DVD/CD-RW
Western Digital 80GB SATA
Maxtor 160GB IDE x2
Western Digital 300GB SATA

nec firmware