i am going to piece together a new AMD Athlon XP CPU, using by old IDE burner, CDRom and HD. Since i have a choice from 3 different boards they are:

Asus A7V266
MSI KT7266-Pro
MSI K7N240

The Asus Board supports ATA33/66/100, so i know i can use my CDRom, Burner, and HD again.

Just say i buy one of the MSI boards, that only support ATA100, can i reuse my older type products?