I am upgrading my system. my cpu is a 1.7 pent 4. Upgrading mobo and chipset now and am planning to upgrade cpu and harddrive later. Trying to decide between the p4p800-e delux and the p4p800sx both made by Asus. Any pros and cons about either that you know of and will they both work with my 4 yr old p4 1.7 cpu for now. Also I am looking for a new case. I want something with good cooling and plenty of room for expansion. I already upgraded to a ati 9800 video card and a 475 watt power supply I will gladly look at any suggestions. This will be my first self built comp.