CD-RW (or Instant Write) not recognising disc type

Details of my system:
Operating System Microsoft Windows XP Home Edition
OS Service Pack Service Pack 2
Motherboard:
CPU Type Intel Pentium 4A, 2400 MHz (18 x 133)
Motherboard Name Asus P4B533-VM (3 PCI, 1 AGP, 2 DIMM, Video)
Motherboard Chipset Intel Brookdale-G i845G
System Memory 1024 MB (DDR SDRAM)
BIOS Type Award Modular (05/07/02)

IDE Controller Intel(R) 82801DB Ultra ATA Controller
Disk Drive WDC WD1200JB-00CRA1 (111 GB, IDE)
Optical Drive GENERIC CRD-BP1700P (40x/12x/40x CD-RW)
Optical Drive LG DVD-ROM DRD8160B (16x/48x DVD-ROM)
Optical Drive PIONEER DVD-RW DVR-104 (DVD:2x/1x/6x, CD:8x/4x/24x DVD-RW)

USB1 Controller Intel 82801DB(M) ICH4(-M) - USB Controller [A-1]
USB1 Controller Intel 82801DB(M) ICH4(-M) - USB Controller [A-1]
USB1 Controller Intel 82801DB(M) ICH4(-M) - USB Controller [A-1]
USB2 Controller Intel 82801DB(M) ICH4(-M) - Enhanced USB2 Controller [A-1]
USB Device Generic USB Hub
USB Device HP LaserJet 1200 USB
USB Device SpeedTouch 330 ADSL Modem


When I insert a CD-R into the generic (Sanyo) drive, the icon to represent the drive changes from CD-RW drive to a large disc icon with a CD-RW tag on it. When I try to format the disk using VOB Instant Write, an error is reported. I assume this is because the disc is showing up as a RW disc. However, when I place the same CD-R into the DVD-RW drive, its icon changes from DVD-RW drive to a large disk icon but this time with the correct CD-R label. This same disc can then be formatted using Instant Write. This means that when I want to burn CDs, I have to use the slower DVD burner. I?m not sure if this is a hardware or a software problem. Can anyone please help?

Andrew Mayers