The Asus P4T-E is by far the best P4 option, other than teh Abit TH7-II.
It will support the Northwood processor, and also the later Northwood B proessor with 533 MHz (133 MHz real) FSB, slightly overclocking the chipset. It supports upto 800 MHz (200 MHz real) FSB so you can use later P4s also.
As for the OS, if you are getting >512 MB memory, must go for XP but I would suggest you Win2000 with the latest service pack. Win98SE is good if 1. you dont put in more than 512MB memory and 2. you dont run heavy duty graphics software that needs windowsNT.
the main problem with XP is that you need to get a new key everytime you move around a part. XPs copy protection takes a snapshot of your hardware configurartion and invalidates the key it evertime it changes!
girish
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