I'll never understand why people format their main boot partition without having another one or, generally, without being sure they come up again.
This is what the emergency disk is for. Before formatting the boot partition, you should create an emergency disk. It contains all CD-ROM, processor and graphics card drivers you need to boot.
Now you should clean up your CD-ROM driver files. You need an ATAPI driver and a CD-Filesystem which are compatible to each other. Either AsimCDFS and asim_atapi.device or CacheCDFS and atapi.device. The connection of the both is in the DosDriver. Load it into an editor (Ed or EditPad) and correct the entries.
Bye,
Thomas