Can any one help with my new motherboard?
I have bought a MSI KT4 Ultra motherboard and AMD 2.4 XP,1G DDR Ram,80G HHD but when I put all this together and boot it up all, I got was blank screen becase it didn't autodetect my CPU at 133MHz and I can't set it up manually because there no jumper setting on the board to do it manually?

How is it that you know it didn't autodetect your CPU? I Would take a look at proper seating of your AGP card if you are getting a true blank screen. Blue screen is a different matter. Seating cards in slots can take up to 30# of pressure the first time. When I am doing a build, I like to seat everything on the mobo while I still have it on the bench so that the hard to seat stuff is sent "home" with a mobo backed up by a hard flat surface. Still hard to install later, but less chance of stress sepraration of a circuit. ;D ;D ;D