@mb123: So you have a CD-ROM which amongst other things contains TC. If I would be in your situation I'd try to "follow the trail": With that I mean to take a look into the boot loader configuration on the CD-ROM (depending on which boot loader is used this might be a file like 'isolinux.cfg', if ISOLINUX is used), and identify how that CD-ROM loads TinyCore.
I could imagine two different approaches: (1) use of discrete files for the kernel (original name: 'bzImage') and the initrd (original name: 'tinycore.gz'), or (2) use of an image file (which would itself contain the kernel and the initrd). I personally have so far only used (1) in such a scenario, but that not need to mean much.
In the end you just need the two aforementioned files. So you could also either download them from
here or the (complete) TC ISO from
here.