Abit motherboards probably have all the IDE channels you could possibly want. The thing you need to decide is how many of each do you want?
If you only want one IDE channel (your DVDRW drives are SCSI or SATA) then any recent ABit motherboard will do. If they are IDE aswell, and you need two IDE channels, something like the AI7 has 2 regular IDE channels and SATA RAID. That is if your P4 is a socket 478. If it's a LGA 775, then get the NI8 SLI instead.
If you only want one IDE channel (your DVDRW drives are SCSI or SATA) then any recent ABit motherboard will do. If they are IDE aswell, and you need two IDE channels, something like the AI7 has 2 regular IDE channels and SATA RAID. That is if your P4 is a socket 478. If it's a LGA 775, then get the NI8 SLI instead.