It appears that everything is working now after installing Creator 5X update (ecdc_v18.104.22.168_basic_enu.exe). I believe what has happend causing my problems is that I was not able to install this ecdc_v22.214.171.124_basic_enu.exe, till you advised me to use RoxiZap to remove all the files after uninstalling. This ecdc_v126.96.36.199_basic_enu.exe is apparently needed to allow formatting of DVD+R/W.
Thanks Skybird for your assistance.
XPS630i Quad Q6600 @ 2.4 GHz BIOS 1.0.13 FSB 1066MHzRAM: 3 GB PC6400 DDR2 SDRAM 800MHzHDD: 2x WD25 00AAJS-75VWA 250GB SATA non RAIDDVD: Liteon DH-20A1S and HL-DT-ST DVD +-RW GSA-H73NVideo: GeForce 8800 GT 512 MBAudio: Audigy 2, Altec Lansing ADA995 5.1 speakersMonitor: Dell 1800FP
XP pro SP3 IE8 WMP 11