OK, let's get some basic information out of the way. Two hard drives: Western Digital 20GB (Programs and Windows XP Home Edition) Maxtor 30GB (Data, which is mostly Poser-related, grin) Both hard drives had problems within the past year which were verified by the utility programs supplied by both manufacturers. Both hard drives were replaced under warranty for free. Both hard drives are formatted NTFS. I have Norton Systemworks 2002 and Norton Internet Security 2002 (designed for Windows XP, and "below.") I've used Norton Products since 1995 (Windows 95). I keep all my software up to date, and do Windows Updates on a regular basis. I've recently found some updates to items such as the on-board video chip, etc. Hardware: 1.) Intel Celron 533MHZ 2.) Onboard Intel AGP video 3.) Onboard IDE controllers (2) 4.) Acer CD-ROM 5.) HP CD Writer (7500 series) 6.) 512MB RAM (maximum amount that is possible on my motherboard) 7.) Soundblaster Live card (updated drivers) 8.) Onboard networking "card" 9.) Computer is networked to my wife's computer. 10.) Cable modem, shared with a Linksys router. 11.) DLink web camera (USB) installed but never used. I think that pretty much covers the basics. I use NTI CD-Maker 2000 for making CD's. It's worked fine till recently. I even reinstalled it and get the same vague error message about not being able to open an un-named file. I haven't installed Roxio (Adaptec) CD Creator because there appear to be some issues with Windows XP, even if you have the most recent version. I try running Norton's Disk Doctor, but it says the drives are under the exclusive control of Windows. So it offers to do something when I reboot. Chkdisk runs (hadn't seen that in ages), and it does some work. But the problems still seem to exist. I tried copying stuff to the C drive, but was still unable to make a CD. I will try System Restore next.