CD Burner issues

I have a Win 98 machine.
I just installed a Pacific Digital CD-RW/DVD Drive.
To finish the installation I installed the WinDVD software and Direct X software. The problem! when I re-booted the PC, it only would boot into Safe Mode UNLESS I had the WinDVD software CD in the drive. If I take out the CD and reboot, it only boots into safe mode. Please HElp

-Mack Freddie