"Is Windows 98SE oder ME Dual Prozessor Compatible I have all ready install 98 on ASUS P2L97-DS with 265 MB Sd-Ram and 2 P2 400 Mhz prozessors it works but i dont know if it fully Support 98 me ? What is if i use NT is SP and Co kompatible to it ?" Windows 98 SE will work on your board but only with 1 CPU. Windows NT will work with the 2 Cpu you have.