I do assume that kernel 2.6.x is used and not 2.4.x (2.6 doesn't need scsi emulation, 2.4 does).
I'm not familiar with PCQuest linux (I cannot even find it in distrowatch). It could be that you can choose from different kernels. If that is not the case you probably need to re-compile the kernel yourself.
There is one other thing you could try before re-compiling, although I doubt if it would work: Add 2 specific entries to your grub config. These entries roughly look like this:
hdd should reflect your cd and/or hde your dvd.
The grub line you need to add this to looks something like this: kernel /boot/vmlinuz
If you are not sure what to put where, post your grub.conf file and the output of dmesg | grep hd
After searching the net it seems that pcquest is a magazine, did it create its own linux distro or did it include another distro with its magazine? Maybe you should consider using a 'real' distro
Anyway, hope this gets you going again.