Software Can’t find CD Writer on System

I have a Dell Dimension XPS T Series with Windows 98 SE. I have created over 30 different picture slide show CD’s. I use ULEAD Photo Explorer 7.0, HP Memory Disk and Smart Disk software. Now for some reason none of the above software can find the CD Writer on my system to record anymore picture slide shows onto a CD-R CD. I am however still able to create music CD’s with the Adaptec easy CD Creator. How can I fix this problem? Thank you for all of your help.