There should be no reason for it not too work at all.
Somebody correct me if I'm wrong but the FSB will not affect the ide(eide) channel at all.
Depending on what the burner or DVD or any drive for that matter will support (ie: ATA-66) and the motherboard can support it as well the drive will try to send or receive at most 66Mb of data (if ATA-66).
ATA-33 = 33Mb data
ATA-66 = 66Mb data
ATA-100 = 100Mb data
Note - both mobo and drive nust support the same setting to be able to use it.