I Need To Know If I Can Use Pentium 4

[mr-rain]

i got my hands on this dell optiplex... the damn thing's so small I decided to gut it out. so now I got a pentium4 2.0Gz that I want to dump in my pc. will this be compatable?

i'm running on a "giga-byte" board (model 761-686b) with an AMD Athlon 1.2Gz

any tips as well?

[3rd gen noob]

i'm running on a "giga-byte" board (model 761-686b) with an AMD Athlon 1.2Gz
a pentium 4 chip won't fit in an athlon board