mobo and processor

hi guys, i hope you can help me with this:
i have two mobos:
a) ASUS p5p800-vm socket 775 intel 865g+ intel ch5
b) MSI pm8m-v P4- mpga478B.

i've been using pentium processor for the MSI and i guess i can also use pentium for the ASUS, can i also use AMD with these mobo's ? or they are created only to be used with pentium? it doesn't say anything about AMD on their boxes, if so how would i know what AMD would fit each mobo? do i go by the socket number ?
thanks.

Socket 775 is for Intel cpu's only. Some mobos are for Intel's and others are for amd's, you must buy the appropriate board for your cpu i.e socket 939 for amd64 cpu's. Personally I suggest you go with amd mobo's... I AM only SUGGESTING, so please dont anihalate me.

thanks for the reply, in other words there is no mobo that can take amd's and pentiums..right?

nay...not as far as I know

There are certain boards or board that can have a PCI card added to it so that I can take either CPU, cant remember what the board is though. I`ll see if I can dig up the link.