I have an Asus P3B-F that has gone south for reasons unknown. It is still under warranty but I figure that if I have to replace the mb I should replace with a newer board to set myself up for my next upgrade. I've had this system for about 10 months so it won't be long. I have a P3 450 so my question is which Asus board would I be best to go with to use with the 450 and that will let me move up to the 800 range in the not to distant future. The only other requirement is at least one ISA slot for my modem, no cable here. Thanks in advance for any advice anyone can give me.